APA (7th ed.) Citation

Ledgard, H. F., & Tauer, J. (1987). Professional software. Addison-Wesley.

Chicago Style (17th ed.) Citation

Ledgard, Henry F., and John Tauer. Professional Software. Reading, Mass.: Addison-Wesley, 1987.

MLA (8th ed.) Citation

Ledgard, Henry F., and John Tauer. Professional Software. Addison-Wesley, 1987.

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