Gaya APA

Bovee, C, L., Thill, J, V. (2021). Business communication today 15th ed (15th ed). Harlow, UK: Pearson Education, c.

Gaya MLA

Bovee, Courtland, L.., Thill, John, V.. "Business communication today 15th ed". 15th ed Harlow, UK: Pearson Education, c, 2021. Buku Wajib.