APA

(1989). Language reference: Microsoft FOXPRO relational database management system for MS-DOS and windows. Estados Unidos de América: Microsoft Corporation.

Chicago

1989. Language reference: Microsoft FOXPRO relational database management system for MS-DOS and windows. Estados Unidos de América: Microsoft Corporation.

Harvard

(1989). Language reference: Microsoft FOXPRO relational database management system for MS-DOS and windows. Estados Unidos de América: Microsoft Corporation.

MLA

Language reference: Microsoft FOXPRO relational database management system for MS-DOS and windows. Estados Unidos de América: Microsoft Corporation. 1989.