Cita APA (7th ed.)
(1999). QUESTIONS WHICH ALL GPS SHOULD BE ABLE TO ANSWER.
Cita Chicago (17th ed.)
QUESTIONS WHICH ALL GPS SHOULD BE ABLE TO ANSWER. 1999.
Cita MLA (9th ed.)
QUESTIONS WHICH ALL GPS SHOULD BE ABLE TO ANSWER. 1999.
Atenció: Aquestes cites poden no estar 100% correctes.