Gaya APA

Shipp, D, E, &, A, S. (1964). Developing Aritmetic Concepts & Skills . London: Prentice-Hall International, Inc..

Gaya MLA

Shipp, Donald, E., &, Adams,, Sam.. "Developing Aritmetic Concepts & Skills". London: Prentice-Hall International, Inc., 1964. Text.