Cita APA (7th ed.)

Sinclair, J. E. (1980). How you can profit from gold / James E. Sinclair and Henry D. Schultz ([Updated and rev. ed.].). Arlington House.

Cita Chicago (17th ed.)

Sinclair, James E. How You Can Profit from Gold / James E. Sinclair and Henry D. Schultz. [Updated and rev. ed.]. West Port, Conn: Arlington House, 1980.

Cita MLA (9th ed.)

Sinclair, James E. How You Can Profit from Gold / James E. Sinclair and Henry D. Schultz. [Updated and rev. ed.]. Arlington House, 1980.