Tropical lichens : their systematics, conservations, and ecology
edited by David J. Galloway
Clarendon Press, 1991
 Buku Teks
Louw, Gideon N.
Physiological animal ecology
Longman Scientific and Technical, 1993
 Buku Teks
Larcher, W.
Physiological plant ecology = Walter Larcher, okologie der pflanzen / W. Larcher; translated by M. A. Biederman-Thorson
Springer-Verlag, 1975
 Buku Teks
Dobson, Frank S.
Lichens : an illustrated guide to the British and Irish species
Richmond, 1992
 Buku Teks
Physiological controls and regulations
edited by William S. Yamamoto and John R. Brobeck
W.B. Saunders, 1965
 Buku Teks SO