APA

Hall D., Little S. & Parsons R. (2003). GCSE Biology. Cumbria, England: Coordination Group Publications.

Chicago

Hall Dominic, Little Simon and Parsons Richard. 2003. GCSE Biology. Cumbria, England: Coordination Group Publications.

Harvard

Hall D., Little S. and Parsons R. (2003). GCSE Biology. Cumbria, England: Coordination Group Publications.

MLA

Hall Dominic, Little Simon and Parsons Richard. GCSE Biology. Cumbria, England: Coordination Group Publications. 2003.