APA

Blair C., . (1986). The pumpkin principle. New York: Ballantine Books.

Chicago

Blair Cynthia, . 1986. The pumpkin principle. New York: Ballantine Books.

Harvard

Blair C., . (1986). The pumpkin principle. New York: Ballantine Books.

MLA

Blair Cynthia, . The pumpkin principle. New York: Ballantine Books. 1986.