Sung, A. (2004). 323 effective business letters. Batu Caves: Minerva Pub.
Chicago Style CitationSung, Abraham. 323 Effective Business Letters. Batu Caves: Minerva Pub, 2004.
MLA CitationSung, Abraham. 323 Effective Business Letters. Batu Caves: Minerva Pub, 2004.
Warning: These citations may not always be 100% accurate.