Idso, Sherwood B. (1989). Carbon Dioxide and Global Change : Earth in Transition. IBR Press, Tempe, viii + 292 p., 22 fig., 2 tabl., 15 x 22,5 cm, 20 US. ISBN 0-9623489 (631 E. Laguena Drive, Tempe, Arizona 85282 U.S.A.) - Singh, Bhawan (Géographie physique et Quaternaire, 1992)