Gaya APA

Bolster, L, C., Douglas, I, W, H. (1985). Mathematical in life . Illinois: Illinois: Scott, Foresman and Co; 1985.

Gaya MLA

Bolster, L., Carey., Douglas, I., Woodburn,, H.. "Mathematical in life". Illinois: Illinois: Scott, Foresman and Co; 1985, 1985. Text.