(2007). ENR 2007. McGraw-Hill.
Chicago Style (17th ed.) CitationENR 2007. McGraw-Hill, 2007.
Cita MLAENR 2007. McGraw-Hill, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.
(2007). ENR 2007. McGraw-Hill.
Chicago Style (17th ed.) CitationENR 2007. McGraw-Hill, 2007.
Cita MLAENR 2007. McGraw-Hill, 2007.