Citazione Stile APA (7a Edizione)

Abbey, M. (2002). Oracle 91: A beginners guide. Mc Graw Hill Companies.

Citazione stile Chigago Style (17a edizione)

Abbey, Michael. Oracle 91: A Beginners Guide. New York: Mc Graw Hill Companies, 2002.

Citatione MLA (9a ed.)

Abbey, Michael. Oracle 91: A Beginners Guide. Mc Graw Hill Companies, 2002.