APA

O'Leary T. J., O'Leary L. I. & Williams B. K. (1989). McGraw-Hill microcomputing labs. New York: McGraw-Hill.

Chicago

O'Leary T J, O'Leary Linda I and Williams Brian K. 1989. McGraw-Hill microcomputing labs. New York: McGraw-Hill.

Harvard

O'Leary T. J., O'Leary L. I. and Williams B. K. (1989). McGraw-Hill microcomputing labs. New York: McGraw-Hill.

MLA

O'Leary T J, O'Leary Linda I and Williams Brian K. McGraw-Hill microcomputing labs. New York: McGraw-Hill. 1989.