Turkington, C. (1999). 12 langkah ke arah daya ingatan cemerlang. Prentice Hall.
Chicago Style (17th ed.) CitationTurkington, Carol. 12 Langkah Ke Arah Daya Ingatan Cemerlang. Singapore: Prentice Hall, 1999.
MLA (8th ed.) CitationTurkington, Carol. 12 Langkah Ke Arah Daya Ingatan Cemerlang. Prentice Hall, 1999.
Warning: These citations may not always be 100% accurate.