Gaya APA

Posamentier, A, S., Krulik, S. (c2012). The Art of Motivating Students for Mathematics Instruction . iau: McGraw-Hill Humanities/Social Sciences/Languages.

Gaya MLA

Posamentier, Alfred, S.., Krulik, Stephen.. "The Art of Motivating Students for Mathematics Instruction". iau: McGraw-Hill Humanities/Social Sciences/Languages, c2012. Buku.