Dyfyniad APA

Tay, B. (2007). Biology InsightsO Level Theory Workbook [teachers edition]Beverly Tay. Pearson Longman.

Dyfyniad Arddull Chicago

Tay, Beverly. Biology InsightsO Level Theory Workbook [teachers Edition]Beverly Tay. Pearson Longman, 2007.

Dyfyniad MLA

Tay, Beverly. Biology InsightsO Level Theory Workbook [teachers Edition]Beverly Tay. Pearson Longman, 2007.

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