APA-referens (7:e uppl.)

Schrems, J. J. (1986). Principles of politics: An introduction. Prentice-Hall.

Chicago-referens (17:e uppl.)

Schrems, John J. Principles of Politics: An Introduction. Englewood Cliffs, N.J: Prentice-Hall, 1986.

MLA-referens (9:e uppl.)

Schrems, John J. Principles of Politics: An Introduction. Prentice-Hall, 1986.