APA-viite (7. p.)

Penrose, G. (1988). Magic mud and other great experiments. Little Simon.

Chicago-viite (17. p.)

Penrose, Gordon. Magic Mud and Other Great Experiments. New York: Little Simon, 1988.

MLA-viite (9. p.)

Penrose, Gordon. Magic Mud and Other Great Experiments. Little Simon, 1988.