APA

Haiduk H. P., Ross P. W., Laby L. J. & Shuman J. E. (1993). Wordperfect-5.1.Lotus 1.2.3-2.2.dbase III Plus. México: McGraW- Hill.

Chicago

Haiduk H Paul, Ross Paul W, Laby Lorraine J and Shuman Jame E. 1993. Wordperfect-5.1.Lotus 1.2.3-2.2.dbase III Plus. México: McGraW- Hill.

Harvard

Haiduk H. P., Ross P. W., Laby L. J. and Shuman J. E. (1993). Wordperfect-5.1.Lotus 1.2.3-2.2.dbase III Plus. México: McGraW- Hill.

MLA

Haiduk H Paul, Ross Paul W, Laby Lorraine J and Shuman Jame E. Wordperfect-5.1.Lotus 1.2.3-2.2.dbase III Plus. México: McGraW- Hill. 1993.