Volunteers for International Technical Assistance, Philippines, Inc. (1969). Vitaphil. s.n.
Cita Chicago (17th ed.)Volunteers for International Technical Assistance, Philippines, Inc. Vitaphil. [Quezon City: s.n, 1969.
Cita MLA (9th ed.)Volunteers for International Technical Assistance, Philippines, Inc. Vitaphil. s.n, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.