na INLIS000000000000892 20180423021710 0010-0418000854 ta 180423 g 0 eng 421 421 STE e Stewart & Lanham & Zimmer English for Business 2 : Effective Letter Writin singapore : Great Media, 2003 The framework of effective communication Hallmarks of effective communication the psychology of effective business writing 01841/SAL/P 01842/SAL/P