(1995). Pintas Efektif Biologi. Preston Corporation Sdn Bhd.
Chicago Style (17th ed.) CitationPintas Efektif Biologi. Selangor: Preston Corporation Sdn Bhd, 1995.
MLA (9th ed.) CitationPintas Efektif Biologi. Preston Corporation Sdn Bhd, 1995.
Warning: These citations may not always be 100% accurate.