Gale, B. (1987). The case of the multi-purpose group. Solidaridad Publishing House.
Cita Chicago (17th ed.)Gale, Bruce. The Case of the Multi-purpose Group. Manila: Solidaridad Publishing House, 1987.
Cita MLA (9th ed.)Gale, Bruce. The Case of the Multi-purpose Group. Solidaridad Publishing House, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.