Gaya APA

Polsby, N, W., Wildavsky, A, B. (1971). Presidential Elections (3rd.Ed). New York: Charles Scribner\'s Sons.

Gaya MLA

Polsby, Nelson, W.., Wildavsky, Aaron, B.. "Presidential Elections". 3rd.Ed New York: Charles Scribner\'s Sons, 1971. Text.