Citazione Stile APA (7a Edizione)

Educational Services Inc. African Education Program. (1964). Mathematics primary two (Prelim. ed.). ESI.

Citazione stile Chigago Style (17a edizione)

Educational Services Inc. African Education Program. Mathematics Primary Two. Prelim. ed. Watertown, MA: ESI, 1964.

Citatione MLA (9a ed.)

Educational Services Inc. African Education Program. Mathematics Primary Two. Prelim. ed. ESI, 1964.