約翰·波特爾 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "約翰·波特爾" in Chinese language version.

refsWebsite

Global rank Chinese rank

2web.archive.org

1^st place

1^st place

1astroleague.org

low place

low place

1skyandtelescope.com

8,316^th place

5,333^rd place

18^th place

57^th place

1webcitation.org

24^th place

29^th place

astroleague.org

John E. Bortle - 2013 Leslie Peltier Award. Astronomical League. [26 September 2014]. （原始内容存档于2015年6月20日）.

harvard.edu

icq.eps.harvard.edu

存档副本. [2016-01-23]. （原始内容存档于2012-04-28）.

skyandtelescope.com

Bortle, John E. The Bortle Dark-Sky Scale. Sky & Telescope. Sky Publishing Corporation. February 2001 [2013-02-20]. （原始内容存档于2014-03-31）.

web.archive.org

John E. Bortle - 2013 Leslie Peltier Award. Astronomical League. [26 September 2014]. （原始内容存档于2015年6月20日）.
Bortle, John E. The Bortle Dark-Sky Scale. Sky & Telescope. Sky Publishing Corporation. February 2001 [2013-02-20]. （原始内容存档于2014-03-31）.

webcitation.org

存档副本. [2016-01-23]. （原始内容存档于2012-04-28）.