APA aipamena

LEFFINGWELL RICHARD. (2019). BASIC MATH SUBTRACTING & TAKING AWAY (2018 Ed.). HEINEMANN LIBRARY.

Chicago Style aipamena

LEFFINGWELL RICHARD. BASIC MATH SUBTRACTING & TAKING AWAY. 2018 Ed. MINNESOTA: HEINEMANN LIBRARY, 2019.

MLA aipamena

LEFFINGWELL RICHARD. BASIC MATH SUBTRACTING & TAKING AWAY. 2018 Ed. HEINEMANN LIBRARY, 2019.