Gaya APA

Ryser, O, E., Brown, J, R. (1961). Tumbling and apparatus stunts : a manual for seventh edition (7 ed.). California: Wm.C.Brown Company Publishers.

Gaya MLA

Ryser, Otto, E.., Brown, James, R. "Tumbling and apparatus stunts : a manual for seventh edition". 7 ed. California: Wm.C.Brown Company Publishers, 1961. Text.