APA

Young(Margaret Levine), . (1999). Visual Basic 6 Completed Reference. : .

Chicago

Young(Margaret Levine), . 1999. Visual Basic 6 Completed Reference. : .

Harvard

Young(Margaret Levine), . (1999). Visual Basic 6 Completed Reference. : .

MLA

Young(Margaret Levine), . Visual Basic 6 Completed Reference. : . 1999.