APA (7th ed.) Citation

Wiley, K., & Friedman, L. (1989). Protecting military secrets. Nature Conservancy Magazine, 39(4), 4.

Chicago Style (17th ed.) Citation

Wiley, Ken, and Leslie Friedman. "Protecting Military Secrets." Nature Conservancy Magazine 39, no. 4 (1989): 4.

MLA (9th ed.) Citation

Wiley, Ken, and Leslie Friedman. "Protecting Military Secrets." Nature Conservancy Magazine, vol. 39, no. 4, 1989, p. 4.