Educational Services Inc. African Education Program. (1964). Mathematics secondary two: Real numbers, graphing, similar figures and trigonometry (Prelim. ed.). ESI.
Chicagoスタイル(17版)引用形式Educational Services Inc. African Education Program. Mathematics Secondary Two: Real Numbers, Graphing, Similar Figures and Trigonometry. Prelim. ed. Watertown, MA: ESI, 1964.
MLA(9版)引用形式Educational Services Inc. African Education Program. Mathematics Secondary Two: Real Numbers, Graphing, Similar Figures and Trigonometry. Prelim. ed. ESI, 1964.
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