Gaya APA

Hoelzle, J, S, ;, D, H, ;, L. (1991). Basic mathematical skills with geometry . New York: Mc Graw Hill.

Gaya MLA

Hoelzle, James, Streeter, ;, Donald, Hutchison, ;, Louis. "Basic mathematical skills with geometry". New York: Mc Graw Hill, 1991. Text.