Tohutoro APA (7th ed.)

Johnson, R. E. (1970). Copper and Nickel converters (1a. ed.). AIME.

Tohutoru Kātū Chicago (17th ed.)

Johnson, Robert E. Copper and Nickel Converters. 1a. ed. Nueva York: AIME, 1970.

Tohutoro MLA (9th ed.)

Johnson, Robert E. Copper and Nickel Converters. 1a. ed. AIME, 1970.