Cita APA (7a ed.)

Key, V. O. (1954). A primer of statistics for political scientists. Crowell.

Cita Chicago Style (17a ed.)

Key, Valdimer Orlando. A Primer of Statistics for Political Scientists. New York: Crowell, 1954.

Cita MLA (9a ed.)

Key, Valdimer Orlando. A Primer of Statistics for Political Scientists. Crowell, 1954.