Cita APA (7th ed.)

Ople, B. F. (1981). Workers, managers, elites: The human spectrum of development. Institute of Labor and Manpower Studies.

Cita Chicago (17th ed.)

Ople, Blas F. Workers, Managers, Elites: The Human Spectrum of Development. Manila: Institute of Labor and Manpower Studies, 1981.

Cita MLA (9th ed.)

Ople, Blas F. Workers, Managers, Elites: The Human Spectrum of Development. Institute of Labor and Manpower Studies, 1981.