Dyfyniad APA

RICHARDSON J F. (2006). COULSON AND RICHARDSON CHEMICALS (5TH.). BUTTERWORTH-HEINEMANN.

Dyfyniad Arddull Chicago

RICHARDSON J F. COULSON AND RICHARDSON CHEMICALS. 5TH. NEW DELHI: BUTTERWORTH-HEINEMANN, 2006.

Dyfyniad MLA

RICHARDSON J F. COULSON AND RICHARDSON CHEMICALS. 5TH. BUTTERWORTH-HEINEMANN, 2006.

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