APA (7th ed.) Citation

GCE O/L Business & Accounting studies…. Astan Publications.

Chicago Style (17th ed.) Citation

GCE O/L Business & Accounting Studies…. Colombo: Astan Publications.

MLA (9th ed.) Citation

GCE O/L Business & Accounting Studies…. Astan Publications.

Warning: These citations may not always be 100% accurate.