Cita APA (7th ed.)

Pehlke, R. D. (1973). UNIT processes of extractive metallurgy. Elsevier.

Cita Chicago (17th ed.)

Pehlke, Robert D. UNIT Processes of Extractive Metallurgy. Nueva York: Elsevier, 1973.

Cita MLA (9th ed.)

Pehlke, Robert D. UNIT Processes of Extractive Metallurgy. Elsevier, 1973.