Gaya APA

Roeder, O, G., Mahmud, M. (1980). Who`s who in Indonesia (Ed. 2). Singapore: Gunung Agung Press.

Gaya MLA

Roeder, O., G.., Mahmud, Mahiddin. "Who`s who in Indonesia". Ed. 2 Singapore: Gunung Agung Press, 1980. Text.