APA (7th ed.) Citation

Castro, L., Hanson, J., & Rettig, T. (1985). Advanced programmer's guide: Featuring dBase III and dBase II. Ashton-Tate.

Chicago Style (17th ed.) Citation

Castro, Luis, Jay Hanson, and Tom Rettig. Advanced Programmer's Guide: Featuring DBase III and DBase II. Culver City, Ca.: Ashton-Tate, 1985.

MLA (9th ed.) Citation

Castro, Luis, et al. Advanced Programmer's Guide: Featuring DBase III and DBase II. Ashton-Tate, 1985.