Gaya APA

Futrell, C, M., Agnihotri, R. (2019). ABC's Of RELATIONSHIP SELLING THROUGH SERVICE (13rd). New York: MCGRAW-HILL.

Gaya MLA

Futrell, Charles, M.., Agnihotri, Raj. "ABC's Of RELATIONSHIP SELLING THROUGH SERVICE". 13rd New York: MCGRAW-HILL, 2019. Text.