APA (7th ed.) Citation

Longhurst, J., & Longhurst, A. (1989). Cobol. Prentice-Hall.

Chicago Style (17th ed.) Citation

Longhurst, Jean, and Audrey Longhurst. Cobol. Englewood Cliffs, N. J: Prentice-Hall, 1989.

MLA (9th ed.) Citation

Longhurst, Jean, and Audrey Longhurst. Cobol. Prentice-Hall, 1989.