Exman, E. (1967). The house of Harper: One hundred and fifty years of publishing. Harper & Row.
Chicago-Zitierstil (17. Ausg.)Exman, Eugene. The House of Harper: One Hundred and Fifty Years of Publishing. New York [u.a.]: Harper & Row, 1967.
MLA-Zitierstil (8. Ausg.)Exman, Eugene. The House of Harper: One Hundred and Fifty Years of Publishing. Harper & Row, 1967.
警告：这些引文格式不一定是100％准确.