Dyfyniad APA

Hill, J. W., Kolb, D. K., & Hill, C. S. (1998). Chemistry for changing times (8th ed.). Prentice Hall.

Dyfyniad Arddull Chicago

Hill, John William, Doris K. Kolb, and Cynthia S. Hill. Chemistry for Changing Times. 8th ed. Upper Saddle River, NJ: Prentice Hall, 1998.

Dyfyniad MLA

Hill, John William, et al. Chemistry for Changing Times. 8th ed. Prentice Hall, 1998.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.