Cita APA (7th ed.)

Rocks, L., & Runyon, R. P. (1972). The energy crisis. Crown Publishers.

Cita Chicago (17th ed.)

Rocks, Lawrence, i Richard P. Runyon. The Energy Crisis. New York: Crown Publishers, 1972.

Cita MLA (9th ed.)

Rocks, Lawrence, i Richard P. Runyon. The Energy Crisis. Crown Publishers, 1972.