Cita APA (7a ed.)

Roberts, G., & Cary, R. (1980). Tool steels (4a ed.). American Society For Metals.

Cita Chicago Style (17a ed.)

Roberts, G.A, y R. Cary. Tool Steels. 4a ed. Ohio: American Society For Metals, 1980.

Cita MLA (9a ed.)

Roberts, G.A, y R. Cary. Tool Steels. 4a ed. American Society For Metals, 1980.