APA (7th ed.) Citation

Sung, A. (2001). 323 effective business letters. Minerva Publications.

Chicago Style (17th ed.) Citation

Sung, Abraham. 323 Effective Business Letters. Seremban: Minerva Publications, 2001.

MLA (9th ed.) Citation

Sung, Abraham. 323 Effective Business Letters. Minerva Publications, 2001.

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