Cita APA (7th ed.)

Yap-Diangco, R. T., & Arevalo, F. C. (1970). Leadership in the service. [s.n.

Cita Chicago (17th ed.)

Yap-Diangco, Robert Tanada, i Filoteo C. Arevalo. Leadership in the Service. Makati, Rizal: [s.n, 1970.

Cita MLA (9th ed.)

Yap-Diangco, Robert Tanada, i Filoteo C. Arevalo. Leadership in the Service. [s.n, 1970.