1. Essentials of business communication Guffey, Mary Ellen, Boston, MA : Cengage Learning, [2023] BUS490 BUS471 ENG213
2. Essentials of business communication Guffey, Mary Ellen, Australia : Cengage Learning, [2019] ENG212
3. Social work skills for community practice: applied Macro social work Brown, Mary Ellen, New York, New York : Springer Publishing, [2023] SW242
