Παραπομπή APA

Kendig, K. (2008). Sink or float?: Thought problems in math and physics. Mathematical Association of America.

Παραπομπή Chicago Style

Kendig, Keith. Sink or Float?: Thought Problems in Math and Physics. Washington, DC: Mathematical Association of America, 2008.

Παραπομπή MLA

Kendig, Keith. Sink or Float?: Thought Problems in Math and Physics. Mathematical Association of America, 2008.