Gaya APA

Swanson, C, P., N, I, S, R. (NULL). Readings in motor learning . Philadelphia:: Philadelphia: Lea and Febiger; 1972.

Gaya MLA

Swanson, Carl, P.., N, I., Singer,, Robert. "Readings in motor learning". Philadelphia:: Philadelphia: Lea and Febiger; 1972, NULL. Text.