Allard, R. (1971). Productivity measurement: A symposium for the seventies. Institute of personnel management.
استشهاد بنمط شيكاغوAllard, R. Productivity Measurement: A Symposium for the Seventies. London: Institute of personnel management, 1971.
MLA استشهادAllard, R. Productivity Measurement: A Symposium for the Seventies. Institute of personnel management, 1971.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.