Beck, Raymond W.
Study and laboratory guide for general biology; part 3: interactions among organisms
Burgess, 1977
 Buku Teks
Beck, Raymond W.
Study and laboratory guide for general biology : part 2: from cells to multicellular organisms
Burgess, 1977, 1977
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Riedl, Rupert
Order in living organisms : a systems analysis of evolution
John Wiley & Sons, 1978
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Viable populations for conservation
edited by Michael E. Soule
Cambridge University Press, 1987
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Boughey, Arthur S.
Ecology of populations
Macmillan, 1973
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