Barnabas, B. (1984). Develop your power to deal with people. Parker Publishing.
Citazione stile Chigago Style (17a edizione)Barnabas, Bentley. Develop Your Power to Deal with People. India: Parker Publishing, 1984.
Citatione MLA (8a ed.)Barnabas, Bentley. Develop Your Power to Deal with People. Parker Publishing, 1984.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.