APA (7th ed.) Citation

Polk, R. W., & Polk, E. W. (1971). The practice of printing: Letterpress and offset (7th ed.). C. A. Bennett Co.

Chicago Style (17th ed.) Citation

Polk, Ralph W., and Edwin W. Polk. The Practice of Printing: Letterpress and Offset. 7th ed. Peoria, Ill.: C. A. Bennett Co, 1971.

MLA (8th ed.) Citation

Polk, Ralph W., and Edwin W. Polk. The Practice of Printing: Letterpress and Offset. 7th ed. C. A. Bennett Co, 1971.