Dyfyniad APA

(1972). Guide for safety in the chemical laboratory. Van Nostrand Reinhold Company.

Dyfyniad Arddull Chicago

Guide for Safety in the Chemical Laboratory. New York: Van Nostrand Reinhold Company, 1972.

Dyfyniad MLA

Guide for Safety in the Chemical Laboratory. Van Nostrand Reinhold Company, 1972.

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