Gaya APA

Swanson, C, P., Ellfeldt, L. (NULL). Dance production handbook later is too late . California:: California: Mayfield Pub.Co.; 1971.

Gaya MLA

Swanson, Carl, P.., Ellfeldt, Lois. "Dance production handbook later is too late". California:: California: Mayfield Pub.Co.; 1971, NULL. Text.