Gaya APA

Alexander, J, J., J., I, S, M. (1976). Chemistry in the laboratory . New York: New York: Harcourt Brace Jovanovich; 1976.

Gaya MLA

Alexander, John, J.., J., I., Steffel,, Margaret. "Chemistry in the laboratory". New York: New York: Harcourt Brace Jovanovich; 1976, 1976. Text.