(1940). Linotype machine principles / Mergenthaler Linotype Company.
Cita Chicago (17th ed.)Linotype Machine Principles / Mergenthaler Linotype Company. 1940.
Cita MLA (9th ed.)Linotype Machine Principles / Mergenthaler Linotype Company. 1940.
Atenció: Aquestes cites poden no estar 100% correctes.