APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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