APA

Wurts J., . (1988). Keeper of the keys. New York: Harper Prism.

Chicago

Wurts Janny, . 1988. Keeper of the keys. New York: Harper Prism.

Harvard

Wurts J., . (1988). Keeper of the keys. New York: Harper Prism.

MLA

Wurts Janny, . Keeper of the keys. New York: Harper Prism. 1988.