Παραπομπή APA

Gray, D. H. (1966). Manpower planning: An approach to the problem. Institute of Personnel Management.

Παραπομπή Chicago Style

Gray, Daniel H. Manpower Planning: An Approach to the Problem. London: Institute of Personnel Management, 1966.

Παραπομπή MLA

Gray, Daniel H. Manpower Planning: An Approach to the Problem. Institute of Personnel Management, 1966.