Gaya APA

LOTT, B, S, L. (2009). A PROBLEM SOLVING APPROACH TO MATHEMATICS (TENTH EDITION). BOSTON: PEARSON EDUCATION.

Gaya MLA

LOTT, BILL, STEIN, LIBESKIND. "A PROBLEM SOLVING APPROACH TO MATHEMATICS". TENTH EDITION BOSTON: PEARSON EDUCATION, 2009. Text.