Cita APA

Hill, J. W., & Hill, C. S. (1992). Chemistry for changing times (6. edition.). New York, New York: Macmillan.

Citación estilo Chicago

Hill, John W., y Cynthia S. Hill. Chemistry for Changing Times. 6. edition. New York, New York: Macmillan, 1992.

Cita MLA

Hill, John W., y Cynthia S. Hill. Chemistry for Changing Times. 6. edition. New York, New York: Macmillan, 1992.