APA (7e ed.) Bronvermelding

Cathcart, W. G. (2003). Learning mathematics in elementary and middle schools (3rd ed.). Merrill Prentice Hall.

Chicago (17e ed.) Bronvermelding

Cathcart, W. George. Learning Mathematics in Elementary and Middle Schools. 3rd ed. Upper Saddle River, N.J: Merrill Prentice Hall, 2003.

MLA (9e ed.) Bronvermelding

Cathcart, W. George. Learning Mathematics in Elementary and Middle Schools. 3rd ed. Merrill Prentice Hall, 2003.