APA-viite (7. p.)

Oppenheim, E. P. (1923). The seven conundrums. Little, Brown, and Co..

Chicago-viite (17. p.)

Oppenheim, E. Phillips. The Seven Conundrums. Boston: Little, Brown, and Co., 1923.

MLA-viite (8. p.)

Oppenheim, E. Phillips. The Seven Conundrums. Little, Brown, and Co., 1923.