Cita APA (7th ed.)
Robertson, W. C. (2005). Air, water, and weather. NSTA Press.
Cita Chicago (17th ed.)
Robertson, William C. Air, Water, and Weather. Arlington, Va.: NSTA Press, 2005.
Cita MLA (9th ed.)
Robertson, William C. Air, Water, and Weather. NSTA Press, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.