APA

Oursler F., . (1947). The precious secret. Philadelphia: J.C. Winston co.

Chicago

Oursler Fulton, . 1947. The precious secret. Philadelphia: J.C. Winston co.

Harvard

Oursler F., . (1947). The precious secret. Philadelphia: J.C. Winston co.

MLA

Oursler Fulton, . The precious secret. Philadelphia: J.C. Winston co. 1947.