APA (7e ed.) Bronvermelding

Exman, E. (1967). The house of Harper: One hundred and fifty years of publishing. Harper & Row.

Chicago (17e ed.) Bronvermelding

Exman, Eugene. The House of Harper: One Hundred and Fifty Years of Publishing. New York [u.a.]: Harper & Row, 1967.

MLA (8e ed.) Bronvermelding

Exman, Eugene. The House of Harper: One Hundred and Fifty Years of Publishing. Harper & Row, 1967.