Cita APA (7th ed.)

Educational Services Inc. African Education Program. (1966). Secondary five (Prelim. ed.). Science Research Associates.

Cita Chicago (17th ed.)

Educational Services Inc. African Education Program. Secondary Five. Prelim. ed. Chicago, IL: Science Research Associates, 1966.

Cita MLA (9th ed.)

Educational Services Inc. African Education Program. Secondary Five. Prelim. ed. Science Research Associates, 1966.