APA

Microsoft Corpoaration, Microsoft Corporation, . (1998). Microsoft Visual Basic 6.0 : manual del programador. Madrid: McGraw-Hill / Interamericana.

Chicago

Microsoft Corpoaration, Microsoft Corporation, . 1998. Microsoft Visual Basic 6.0 : manual del programador. Madrid: McGraw-Hill / Interamericana.

Harvard

Microsoft Corpoaration, Microsoft Corporation, . (1998). Microsoft Visual Basic 6.0 : manual del programador. Madrid: McGraw-Hill / Interamericana.

MLA

Microsoft Corpoaration, Microsoft Corporation, . Microsoft Visual Basic 6.0 : manual del programador. Madrid: McGraw-Hill / Interamericana. 1998.