Cita APA (7th ed.)

Davis, W. S. (1990). Computing fundamentals: Productivity tools ; PC-DOS & MS-DOS ; wordperfect 5.0 / 5.1 ; lotus 1-2-3 release 2.01 / 2.2 ; dBASE III PLUS. Addison-Wesley.

Cita Chicago (17th ed.)

Davis, William S. Computing Fundamentals: Productivity Tools ; PC-DOS & MS-DOS ; Wordperfect 5.0 / 5.1 ; Lotus 1-2-3 Release 2.01 / 2.2 ; DBASE III PLUS. Reading, Mass: Addison-Wesley, 1990.

Cita MLA (9th ed.)

Davis, William S. Computing Fundamentals: Productivity Tools ; PC-DOS & MS-DOS ; Wordperfect 5.0 / 5.1 ; Lotus 1-2-3 Release 2.01 / 2.2 ; DBASE III PLUS. Addison-Wesley, 1990.