Rottman, Gordon L.; Dr. Duncan Anderson (consultant editor) (2005年) Japanese Army in World War II: The South Pacific and New Guinea, 1942-43、Oxford and New York: Osprey ISBN1-84176-870-7
Source states that photo is from the U.S. National Archives.
Japanese Type 94 75mm mountain gun. Scanned from: *{{cite book | last = Rottman | first = Gordon L. | authorlink = | coauthors = Dr. Duncan Anderson (consultant editor) | year = 2005 | chapter = | title = Japanese Army in World War II: The South