Stocker, H. E. (1951). Materials handling: Principles, equipment and methods (2d ed.). Prentice-Hall.
Cita Chicago (17th ed.)Stocker, Harry Ellis. Materials Handling: Principles, Equipment and Methods. 2d ed. New York: Prentice-Hall, 1951.
Cita MLA (9th ed.)Stocker, Harry Ellis. Materials Handling: Principles, Equipment and Methods. 2d ed. Prentice-Hall, 1951.
Atenció: Aquestes cites poden no estar 100% correctes.