Gaya APA

Metcalfe, H, C., Clark, I, W, H. (1986). Modern chemistry . New York: New York: Holt, Rinehart and Winston; 1986.

Gaya MLA

Metcalfe, H., Clark., Clark, I., Williams,, H.. "Modern chemistry". New York: New York: Holt, Rinehart and Winston; 1986, 1986. Text.