Gaya APA

Kroschwitz, J, I., Winokur, M. (1990). Chemistry : general, organic, biological (2nd ed). New York: McGraw-Hill.

Gaya MLA

Kroschwitz, Jacqueline, I.., Winokur, Melvin. "Chemistry : general, organic, biological". 2nd ed New York: McGraw-Hill, 1990. Text.