Cita APA (7th ed.)

Williams, J. F. (1956). The principles of physical education (6ª ed.). W:B: Saunders.

Cita Chicago (17th ed.)

Williams, Jesse Feiring. The Principles of Physical Education. 6ª ed. Philadelphia: W:B: Saunders, 1956.

Cita MLA (9th ed.)

Williams, Jesse Feiring. The Principles of Physical Education. 6ª ed. W:B: Saunders, 1956.