TSCHOHL, J., FRANZMEIER, S., & SINGO, T. [. (2003). Achieving excellence through customer service: Unggulbersaing melalui layanan pelanggan. Gramedia Pustaka Utama.
芝加哥风格引文TSCHOHL, John, Steve FRANZMEIER, 与 Tjita [pnj] SINGO. Achieving Excellence Through Customer Service: Unggulbersaing Melalui Layanan Pelanggan. Jakarta: Gramedia Pustaka Utama, 2003.
MLA引文TSCHOHL, John, et al. Achieving Excellence Through Customer Service: Unggulbersaing Melalui Layanan Pelanggan. Gramedia Pustaka Utama, 2003.
警告：这些引文格式不一定是100％准确.