Παραπομπή APA

Bramer, T. P. C. e. a. (1977). Basic vibration control. South research laboratory.

Παραπομπή Chicago Style

Bramer, T P C et al.. Basic Vibration Control. New York: South research laboratory, 1977.

Παραπομπή MLA

Bramer, T P C et al.. Basic Vibration Control. South research laboratory, 1977.