Gaytero, R. B. (1996). Powerful mathematics shortcuts and techniques in multiplication: (30 techniques), for all levels and for all times. The Author].
Chicago Style aipamenaGaytero, Reynaldo B. Powerful Mathematics Shortcuts and Techniques in Multiplication: (30 Techniques), for All Levels and for All Times. [S.l: The Author], 1996.
MLA aipamenaGaytero, Reynaldo B. Powerful Mathematics Shortcuts and Techniques in Multiplication: (30 Techniques), for All Levels and for All Times. The Author], 1996.
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