ebelbeb:
"The Ultimate Asahi Pentax Screw Mount Guide 1952-1977" Gerjan van Oosten
ebelbeb:
"Asahi Pentax and Pentax SLR 35mm cameras 1952-1989" Danilo Cecchi
ebelbeb:
"Asahiflex and the Pre-1959 Asahi Pentax Cameras" Frederick C. Sherfy
ebelbeb:
"Asahi Pentax Manual" K.L.Allinson S.L.Jordan
ebelbeb:
"Complete Pentax User's Guide Modern Classics" Harold Franklin
ebelbeb:
"How to select & use Pentax SLR cameras" Carl Shipman
ebelbeb:
"The Honeywell Pentax Way" Herbert Keppler
ebelbeb:
"Lens Guide" Leonard Gaunt & "Asahi Pentax Guide" W.D.Emanuel
ebelbeb:
"Tradycyjny i cyfrowy PENTAX system" Paweł M. Kazimierczak
ebelbeb:
"The Japanase Historical Camera" by Japan Camera Industry Institute and JCII Camera Museum