(2002). The water planet. Glencoe McGraw-Hill.
Cita Chicago (17th ed.)The Water Planet. New York: Glencoe McGraw-Hill, 2002.
Cita MLA (9th ed.)The Water Planet. Glencoe McGraw-Hill, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.
(2002). The water planet. Glencoe McGraw-Hill.
Cita Chicago (17th ed.)The Water Planet. New York: Glencoe McGraw-Hill, 2002.
Cita MLA (9th ed.)The Water Planet. Glencoe McGraw-Hill, 2002.