Dyfyniad APA

Proctor, N. H. (1988). Chemical hazards of the work place: : 2nd ed (2nd ed.). J. B. Lippincott.

Dyfyniad Arddull Chicago

Proctor, Nick H. Chemical Hazards of the Work Place: : 2nd Ed. 2nd ed. Philadelphia: J. B. Lippincott, 1988.

Dyfyniad MLA

Proctor, Nick H. Chemical Hazards of the Work Place: : 2nd Ed. 2nd ed. J. B. Lippincott, 1988.

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