Buku yang Dikarang by Mel Friedman

Numbers and Operations Workbook

Algebra & Functions Workbook

Praxis II Middle School Mathematics (0069) 2nd Ed.

CLEP® Calculus Book + Online

Geometry Workbook

Probability and Statistics Workbook

Algebra and Functions Workbook

Numbers and Operations Workbook

Probability & Statistics Workbook

Trigonometry Workbook