APA (7th ed.) Citation

Mitchell, B. M., & Vogelsang, I. (1991). U.S. practice of telecommunications pricing. Wiss. Inst. für Kommunikationsdienste.

Chicago Style (17th ed.) Citation

Mitchell, Bridger M., and Ingo Vogelsang. U.S. Practice of Telecommunications Pricing. Bad Honnef: Wiss. Inst. für Kommunikationsdienste, 1991.

MLA (9th ed.) Citation

Mitchell, Bridger M., and Ingo Vogelsang. U.S. Practice of Telecommunications Pricing. Wiss. Inst. für Kommunikationsdienste, 1991.