Tuhovsky,IAN. (2020). Effective Communication Skills Mastery Bible: 4 Books in 1 (NA.). Amazon.
Cita Chicago (17th ed.)Tuhovsky,IAN. Effective Communication Skills Mastery Bible: 4 Books in 1. NA. Amazon, 2020.
Cita MLA (9th ed.)Tuhovsky,IAN. Effective Communication Skills Mastery Bible: 4 Books in 1. NA. Amazon, 2020.
Atenció: Aquestes cites poden no estar 100% correctes.