APA

Retton M. L., Karolyi B. & Powers J. (1986). Mary Lou: creating an olympic champion. New York: McGraw-Hill.

Chicago

Retton Mary Lou, Karolyi Bela and Powers John. 1986. Mary Lou: creating an olympic champion. New York: McGraw-Hill.

Harvard

Retton M. L., Karolyi B. and Powers J. (1986). Mary Lou: creating an olympic champion. New York: McGraw-Hill.

MLA

Retton Mary Lou, Karolyi Bela and Powers John. Mary Lou: creating an olympic champion. New York: McGraw-Hill. 1986.