APA (7th ed.) Citation

Educational Services Inc. African Education Program. (1964). Mathematics secondary two: Rational numbers (Prilim. ed.). ESI.

Chicago Style (17th ed.) Citation

Educational Services Inc. African Education Program. Mathematics Secondary Two: Rational Numbers. Prilim. ed. Watertown, MA: ESI, 1964.

MLA (9th ed.) Citation

Educational Services Inc. African Education Program. Mathematics Secondary Two: Rational Numbers. Prilim. ed. ESI, 1964.