Cita APA (7th ed.)

Isaak, A. (1987). An Introduction to politics. Scott, Foresman.

Cita Chicago (17th ed.)

Isaak, Alan. An Introduction to Politics. London: Scott, Foresman, 1987.

Cita MLA (9th ed.)

Isaak, Alan. An Introduction to Politics. Scott, Foresman, 1987.