Cita APA (7a ed.)

Halvorson, M. (1997). Microsoft Visual BASIC 4 paso a paso. McGraw-Hill.

Cita Chicago Style (17a ed.)

Halvorson, Michael. Microsoft Visual BASIC 4 Paso a Paso. Madrid: McGraw-Hill, 1997.

Cita MLA (9a ed.)

Halvorson, Michael. Microsoft Visual BASIC 4 Paso a Paso. McGraw-Hill, 1997.