APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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

Let op: Deze citaties zijn niet altijd 100% accuraat.