Cita APA (7th ed.)

De Villiers, C., & Metrowich, F. (1975). The communist strategy. Department of information.

Cita Chicago (17th ed.)

De Villiers, C.F, i F.R Metrowich. The Communist Strategy. Pretoria: Department of information, 1975.

Cita MLA (9th ed.)

De Villiers, C.F, i F.R Metrowich. The Communist Strategy. Department of information, 1975.