APA Style

Barker, W, G. et al (1992). Sejarah persandian Amerika Serikat 1930-1939 = The history of code and cipher in the United States during the periode between in the world wars part II 1930-1939 . Jakarta: Lembaga Sandi Negara.

MLA Style

Barker, Wayne, G.. et al. "Sejarah persandian Amerika Serikat 1930-1939 = The history of code and cipher in the United States during the periode between in the world wars part II 1930-1939". Jakarta: Lembaga Sandi Negara, 1992. Text.