APA aipamena

Hopkins, A. L. (1943). Periscope peeks at the world above. Our Sunday Visitor.

Chicago Style aipamena

Hopkins, A. L. Periscope Peeks at the World Above. Huntington, Ind.: Our Sunday Visitor, 1943.

MLA aipamena

Hopkins, A. L. Periscope Peeks at the World Above. Our Sunday Visitor, 1943.