APA (7e ed.) Bronvermelding

Upfold, R. W. (1963). The Vibrating wire or acoustic gauge. University of N.S.W..

Chicago (17e ed.) Bronvermelding

Upfold, R. W. The Vibrating Wire or Acoustic Gauge. [Sydney]: University of N.S.W., 1963.

MLA (8e ed.) Bronvermelding

Upfold, R. W. The Vibrating Wire or Acoustic Gauge. University of N.S.W., 1963.