APA
Parsons R., Shepperson A., . (2003). GCSE Chemistry. Cumbria, England: Coordination Group Publications.
Chicago
Parsons Richard, Shepperson Alice, . 2003. GCSE Chemistry. Cumbria, England: Coordination Group Publications.
Harvard
Parsons R., Shepperson A., . (2003). GCSE Chemistry. Cumbria, England: Coordination Group Publications.
MLA
Parsons Richard, Shepperson Alice, . GCSE Chemistry. Cumbria, England: Coordination Group Publications. 2003.