APA (7th ed.) Citation

Simpson, A. (1992). Understanding dBase IV 1.5 for Dos (Third Edition.). Tech Publishing.

Chicago Style (17th ed.) Citation

Simpson, Alan. Understanding DBase IV 1.5 for Dos. Third Edition. Singapore: Tech Publishing, 1992.

MLA (9th ed.) Citation

Simpson, Alan. Understanding DBase IV 1.5 for Dos. Third Edition. Tech Publishing, 1992.

Warning: These citations may not always be 100% accurate.