APA (7th ed.) Citation

Sung lhAbraham. 323 effective business letters.

Chicago Style (17th ed.) Citation

Sung lhAbraham. 323 Effective Business Letters. Seremban lbMinerva Publications lc1997.

MLA (9th ed.) Citation

Sung lhAbraham. 323 Effective Business Letters.

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