Mundel, M. E. (1960). Motion and time study: Principles and practice (3rd ed.). Englewood Cliffs, N.J: Prentice-Hall.
Παραπομπή Chicago StyleMundel, Marvin E. Motion and Time Study: Principles and Practice. 3rd ed. Englewood Cliffs, N.J: Prentice-Hall, 1960.
Παραπομπή MLAMundel, Marvin E. Motion and Time Study: Principles and Practice. 3rd ed. Englewood Cliffs, N.J: Prentice-Hall, 1960.
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