中山正敏 (空手家) (Japanese Wikipedia)

Cheetham, J. (1998): Editorial Archived 2011-07-16 at the Wayback Machine. Shotokan Karate Magazine, 54(1) (February 1998). Retrieved on February 14, 2010.

skdun.com

Shotokan Karate Do of United Nations: Shotokan Karate History Retrieved on February 13, 2010.

skskarate.net

Shotokan Karate-Do Sunshine Coast: About Shotokan Archived 2009-11-22 at the Wayback Machine. Retrieved on February 14, 2010.

theshotokanway.com

The Shotokan Way: Masatoshi Nakayama profile Retrieved on February 13, 2010.
The Shotokan Way: Hoitsugan seminars 2005 Retrieved on February 14, 2010.

usadojo.com

USA Dojo: Masatoshi Nakayama Retrieved on February 13, 2010.
USA Dojo: Masatoshi Nakayama Retrieved on February 13, 2010.
USA Dojo: Masatoshi Nakayama Retrieved on February 13, 2010.
USA Dojo: Masatoshi Nakayama Retrieved on February 13, 2010.
USA Dojo: Masatoshi Nakayama Retrieved on February 13, 2010.
USA Dojo: Masatoshi Nakayama Retrieved on February 13, 2010.

web.archive.org

Abada Capoeira: In memoriam – Master Masatoshi Nakayama Archived 2009-11-29 at the Wayback Machine. Retrieved on February 13, 2010.
Shoto-ryu Karate-do Shiseikai: Masatoshi Nakayama Archived 2010-01-20 at the Wayback Machine. Retrieved on February 13, 2010.
Japan Karate Association: Master Nakayama Masatoshi Archived 2010-04-07 at the Wayback Machine. Retrieved on February 13, 2010.
Japan Karate Association: Master Nakayama Masatoshi Archived 2010-04-07 at the Wayback Machine. Retrieved on February 13, 2010.
Abada Capoeira: In memoriam – Master Masatoshi Nakayama Archived 2009-11-29 at the Wayback Machine. Retrieved on February 13, 2010.
Zalewski, P. (2005): The Japanese evolution of Karate rank Archived 2008-07-19 at the Wayback Machine. (extract). Retrieved on February 14, 2010.
Japan Karate Association: Master Nakayama Masatoshi Archived 2010-04-07 at the Wayback Machine. Retrieved on February 13, 2010.
Zalewski, P. (2005): The Japanese evolution of Karate rank Archived 2008-07-19 at the Wayback Machine. (extract). Retrieved on February 14, 2010.
Abada Capoeira: In memoriam – Master Masatoshi Nakayama Archived 2009-11-29 at the Wayback Machine. Retrieved on February 13, 2010.
Abada Capoeira: In memoriam – Master Masatoshi Nakayama Archived 2009-11-29 at the Wayback Machine. Retrieved on February 13, 2010.
International Shotokan Karate Federation: History of ISKF Archived 2010-06-09 at the Wayback Machine. Retrieved on February 14, 2010.
Shotokan Karate-Do Sunshine Coast: About Shotokan Archived 2009-11-22 at the Wayback Machine. Retrieved on February 14, 2010.
Japan Karate Association: Master Nakayama Masatoshi Archived 2010-04-07 at the Wayback Machine. Retrieved on February 13, 2010.
Cheetham, J. (1998): Editorial Archived 2011-07-16 at the Wayback Machine. Shotokan Karate Magazine, 54(1) (February 1998). Retrieved on February 14, 2010.
Marr, J. G. (2008): The history of Japan Karate Association and Midwest Karate in Canada Archived 2009-08-29 at the Wayback Machine. Retrieved on January 16, 2010.
Zalewski, P. (2005): The Japanese evolution of Karate rank Archived 2008-07-19 at the Wayback Machine. (extract). Retrieved on February 14, 2010.
Abada Capoeira: In memoriam – Master Masatoshi Nakayama Archived 2009-11-29 at the Wayback Machine. Retrieved on February 13, 2010.
Japan Karate Association: History – Growth & Development (1957–1989) Archived 2010-11-25 at the Wayback Machine. Retrieved on February 14, 2010.
International Shotokan Karate Federation: Masters Archived 2010-04-28 at the Wayback Machine. Retrieved on February 13, 2010.
JKA Finland: History of Karate Archived 2009-05-20 at the Wayback Machine. Retrieved on February 13, 2010.
Victoria Shotokan Karate-Do and Kobudo Association: Modern Karate Masters Archived 2015-04-27 at the Wayback Machine. Retrieved on February 13, 2010.