APA

Sipe R., . (1990). A secret word. New York: Brunner/Mazel.

Chicago

Sipe Richard, . 1990. A secret word. New York: Brunner/Mazel.

Harvard

Sipe R., . (1990). A secret word. New York: Brunner/Mazel.

MLA

Sipe Richard, . A secret word. New York: Brunner/Mazel. 1990.