Cita APA (7th ed.)

Gnadig, P. (2003). 200 Puzzling physics problems. Univ. Pr.

Cita Chicago (17th ed.)

Gnadig, Peter. 200 Puzzling Physics Problems. Cambridge: Univ. Pr, 2003.

Cita MLA (9th ed.)

Gnadig, Peter. 200 Puzzling Physics Problems. Univ. Pr, 2003.