APA

Cronin A. J., .The Keys of the Kingolom. New York: Bantam Books.

Chicago

Cronin A J, .The Keys of the Kingolom. New York: Bantam Books.

Harvard

Cronin A. J., .The Keys of the Kingolom. New York: Bantam Books.

MLA

Cronin A J, .New York: Bantam Books. .