Saya mau tau Nota dari Mortar Model 89. Jelaskan dalam bahasa melayu

Leo J. Daugherty III, Fighting Techniques of a Japanese Infantryman 1941-1945, ISBN 1-86227-162-3

Gordon L Rottman, Japanese Infantryman 1937-45 Sword of the empire, ISBN 1-84176-818-9

US Army field manual TM-E 30-480 at hyperwar

U.S. World War II Intel Report on Japanese Smoke Grenades

Nambu World: Type 89 “Knee Mortar” (Grenade Launcher)

Type 91 grenade at inert-ord.net

Type 89 grenade at inert-ord.net

Colour pictures of the Type 89 and Type 10 at carbinesforcollectors.com