Cita APA (7a ed.)

Welch, K. F. (1972). Time measurement: An introductory history. David and Charles.

Cita Chicago Style (17a ed.)

Welch, Kenneth F. Time Measurement: An Introductory History. Newton Abbot: David and Charles, 1972.

Cita MLA (9a ed.)

Welch, Kenneth F. Time Measurement: An Introductory History. David and Charles, 1972.