APA (7th ed.) Citation

Frigstad, D. B. (1995). Customer engineering: Cutting-edge selling strategies. The Oasis Press/PSI Research.

Chicago Style (17th ed.) Citation

Frigstad, David B. Customer Engineering: Cutting-edge Selling Strategies. Grant Pass, Ore: The Oasis Press/PSI Research, 1995.

MLA (9th ed.) Citation

Frigstad, David B. Customer Engineering: Cutting-edge Selling Strategies. The Oasis Press/PSI Research, 1995.