Make sure it is professional and polished, and in proper business letter format. (thebalance.com)
Learning how to make an impression after a job interview is really just about following proper business etiquette. (vmsolu.com)
To gain the public's respect, we must conduct ourselves like professionals, dress in proper business attire, have impeccable manners and grooming, and use the language properly. (realtormag.realtor.org)