APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

Educational Services Inc. African Education Program. Secondary Four: Geometry. Prelim. ed. Science Research Associates, 1966.

Let op: Deze citaties zijn niet altijd 100% accuraat.