Gaya APA

Bram, L, L. (1979). Funk and wagnalls new encyclopedia Vol.20 : Punishment to Russian revolution . New York: Funk and Wagnalls.

Gaya MLA

Bram, Leon, L.. "Funk and wagnalls new encyclopedia Vol.20 : Punishment to Russian revolution". New York: Funk and Wagnalls, 1979. Text.