Gaya APA

Smart, T, L., O, I, K, A. (1987). World history: a story of progress . New York: New York: Holt, Rinehart and Winston, 1987.

Gaya MLA

Smart, Terry, L., O, I., Kownslar,, Allan. "World history: a story of progress". New York: New York: Holt, Rinehart and Winston, 1987, 1987. Text.