Cita APA (7th ed.)

Vallee, B. L. (1973). Phosphorus. American Petroleum Institute.

Cita Chicago (17th ed.)

Vallee, Bert L. Phosphorus. Washington: American Petroleum Institute, 1973.

Cita MLA (8th ed.)

Vallee, Bert L. Phosphorus. American Petroleum Institute, 1973.