Cita APA (7th ed.)
Fritts, H. (1976). Tree Rings and climate. Academic Press.
Cita Chicago (17th ed.)
Fritts, H.C. Tree Rings and Climate. London, New York, San Francisco: Academic Press, 1976.
Cita MLA (9th ed.)
Fritts, H.C. Tree Rings and Climate. Academic Press, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.