DOBSON, A. (1999). Writing business letters: How to tackle your day-to-daybusiness correspondence successfully. Grolier International.

DOBSON, Ann. Writing Business Letters: How to Tackle Your Day-to-daybusiness Correspondence Successfully. Hongkong: Grolier International, 1999.

DOBSON, Ann. Writing Business Letters: How to Tackle Your Day-to-daybusiness Correspondence Successfully. Grolier International, 1999.