APA (7th ed.) Citation

Perkins, D., & Perkins, J. (1989). Business letters: Made to measure ; (business letters instantly). Domino Books.

Chicago Style (17th ed.) Citation

Perkins, Derek, and Joan Perkins. Business Letters: Made to Measure ; (business Letters Instantly). St. John's: Domino Books, 1989.

MLA (9th ed.) Citation

Perkins, Derek, and Joan Perkins. Business Letters: Made to Measure ; (business Letters Instantly). Domino Books, 1989.