Pranin, Stanley (2006). "Iwama-Style Aikido". The Encyclopedia of Aikido. Aikido Journal. Archived from the original on September 21, 2012. Retrieved September 1, 2010.
Pranin, Stanley (2006). "Iwama-Style Aikido". The Encyclopedia of Aikido. Aikido Journal. Archived from the original on September 21, 2012. Retrieved September 1, 2010.