Cita APA (7th ed.)

Keffer, R., & McNeil, C. (1928). Methods in non-ferrous metallurgical analysis (1a. ed.). McGraw-Hill Book Company Inc.

Cita Chicago (17th ed.)

Keffer, Robert, i Charles McNeil. Methods in Non-ferrous Metallurgical Analysis. 1a. ed. Nueva York: McGraw-Hill Book Company Inc, 1928.

Cita MLA (9th ed.)

Keffer, Robert, i Charles McNeil. Methods in Non-ferrous Metallurgical Analysis. 1a. ed. McGraw-Hill Book Company Inc, 1928.