APA

Wrede P. C., Copyright Paperback Collection (Library of Congress), . (1987). Caught in crystal. New York: Ace Fantasy Books.

Chicago

Wrede Patricia C, Copyright Paperback Collection (Library of Congress), . 1987. Caught in crystal. New York: Ace Fantasy Books.

Harvard

Wrede P. C., Copyright Paperback Collection (Library of Congress), . (1987). Caught in crystal. New York: Ace Fantasy Books.

MLA

Wrede Patricia C, Copyright Paperback Collection (Library of Congress), . Caught in crystal. New York: Ace Fantasy Books. 1987.