Matematika dasar (teori dan soal)
Theory and Problems of Advanced calculus : S1 (Metric) edition
Theory and problems of Vector Analysis : and an introduction to tensor analysis S1 (Metric) edition. / Murray R.Spiegel
Theory and problems of STatistics in s1 units / Murray R.Spiegel
Theory and problems Advanced Calculus : S1 (metric) Edition / Murray R.Spiegel
Theory and problems of complex Variables : Conformal mapping and its applcation S1 (metric) Edition. / Murray R.Spiegel.
College algebra : Theory and problems / Murray R.Spiegel.