Cita APA (7th ed.)

Ladue, F., & Norman, J. (1960). Two seconds of freedom (5th ed.). Nissen Trampoline.

Cita Chicago (17th ed.)

Ladue, Frank, i Jim Norman. Two Seconds of Freedom. 5th ed. Cedar Rapids, Iowa: Nissen Trampoline, 1960.

Cita MLA (8th ed.)

Ladue, Frank, i Jim Norman. Two Seconds of Freedom. 5th ed. Nissen Trampoline, 1960.