APA (7th ed.) Citation

Weber Systems, Inc. (1984). Lotus 1-2-3 user's handbook. Weber Systems.

Chicago Style (17th ed.) Citation

Weber Systems, Inc. Lotus 1-2-3 User's Handbook. Cleveland, Ohio: Weber Systems, 1984.

MLA (9th ed.) Citation

Weber Systems, Inc. Lotus 1-2-3 User's Handbook. Weber Systems, 1984.

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