Citazione Stile APA (7a Edizione)

Educational Services Inc. African Education Program. (1962). Mathematics secondary one: Introduction to algebra and to the language of geometry (Prelim. ed.). ESI.

Citazione stile Chigago Style (17a edizione)

Educational Services Inc. African Education Program. Mathematics Secondary One: Introduction to Algebra and to the Language of Geometry. Prelim. ed. Watertown, MA: ESI, 1962.

Citatione MLA (9a ed.)

Educational Services Inc. African Education Program. Mathematics Secondary One: Introduction to Algebra and to the Language of Geometry. Prelim. ed. ESI, 1962.