APA

Donaldson J., Scheffler A., .Stickman. : Schoolastic.

Chicago

Donaldson Julia, Scheffler Axel, .Stickman. : Schoolastic.

Harvard

Donaldson J., Scheffler A., .Stickman. : Schoolastic.

MLA

Donaldson Julia, Scheffler Axel, .: Schoolastic. .