APA

Oursler F., . (1949). The happy grotto. New York: McMullen.

Chicago

Oursler Fulton, . 1949. The happy grotto. New York: McMullen.

Harvard

Oursler F., . (1949). The happy grotto. New York: McMullen.

MLA

Oursler Fulton, . The happy grotto. New York: McMullen. 1949.