APA (7. basım) Alıntı

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

Chicago Style (17. basım) Atıf

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

MLA (9th ed.) Atıf

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