Cita APA (7a ed.)

Niebel, B. W. (1988). Motion and time study (8a ed.). Irwin, Richard D. , Inc.

Cita Chicago Style (17a ed.)

Niebel, Benjamin W. Motion and Time Study. 8a ed. Homewood, Illinois: Irwin, Richard D. , Inc, 1988.

Cita MLA (9a ed.)

Niebel, Benjamin W. Motion and Time Study. 8a ed. Irwin, Richard D. , Inc, 1988.