Παραπομπή APA

Allard, R. (1971). Productivity measurement: A symposium for the seventies. Institute of personnel management.

Παραπομπή Chicago Style

Allard, R. Productivity Measurement: A Symposium for the Seventies. London: Institute of personnel management, 1971.

Παραπομπή MLA

Allard, R. Productivity Measurement: A Symposium for the Seventies. Institute of personnel management, 1971.