Dyfyniad APA

Aldrich. (1992). Catalog handbook of fine chemical Aldrich 1992 - 1993. Wisconsin: Aldrich Chemical.

Dyfyniad Arddull Chicago

Aldrich. Catalog Handbook of Fine Chemical Aldrich 1992 - 1993. Wisconsin: Aldrich Chemical, 1992.

Dyfyniad MLA

Aldrich. Catalog Handbook of Fine Chemical Aldrich 1992 - 1993. Wisconsin: Aldrich Chemical, 1992.

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