Gaya APA

Shipman, J, T., T., I, W, J. (1990). An introduction to Physical Science . Toronto: Toronto: D.C. Heath and Company; 1990.

Gaya MLA

Shipman, James, T.., T., I., Wilson,, James. "An introduction to Physical Science". Toronto: Toronto: D.C. Heath and Company; 1990, 1990. Text.