Dyfyniad APA

HARRISON. E. R. (2012). FRANK MODERN CERTIFICATE BIOLOGY FOR MIDDLE SCHOOL WORKBOOK CLASS- 7 ( 2013- 14 ). FRANK BROS.

Dyfyniad Arddull Chicago

HARRISON. E. R. FRANK MODERN CERTIFICATE BIOLOGY FOR MIDDLE SCHOOL WORKBOOK CLASS- 7 ( 2013- 14 ). FRANK BROS, 2012.

Dyfyniad MLA

HARRISON. E. R. FRANK MODERN CERTIFICATE BIOLOGY FOR MIDDLE SCHOOL WORKBOOK CLASS- 7 ( 2013- 14 ). FRANK BROS, 2012.

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