Guide to managerial communication: effective business writing and speaking

Guide to electronic communication : using technology for effective business writing and speaking

Menjadi pembicara ulung dalam bisnis = Effective speaking for business success

Guide to effective business speaking: making presentation, using audio-visuals and dealing with the media / Jacqueline Dunckel, Elizabeth Parnham

Quantitatvie decision making of business / Gilbert Gordon, Israel Pressman and Sanford Cohn