APA (7e ed.) Bronvermelding

Buchan, J. (1959). The thirty-nine steps (New ed. (re-set).). Pan Books.

Chicago (17e ed.) Bronvermelding

Buchan, John. The Thirty-nine Steps. New ed. (re-set). London: Pan Books, 1959.

MLA (9e ed.) Bronvermelding

Buchan, John. The Thirty-nine Steps. New ed. (re-set). Pan Books, 1959.