Educational Services Inc. African Education Program. (1965). Secondary four: Algebra (Prelim. ed.). Science Research Associates.
芝加哥风格引文Educational Services Inc. African Education Program. Secondary Four: Algebra. Prelim. ed. Chicago, IL: Science Research Associates, 1965.
MLA引文Educational Services Inc. African Education Program. Secondary Four: Algebra. Prelim. ed. Science Research Associates, 1965.
警告：这些引文格式不一定是100％准确.