Tullar, Richard M.
The Human species : its nature, evolution, and ecology
McGraw-Hill, 1977
 Buku Teks
Dobson, Frank S.
Lichens : an illustrated guide to the British and Irish species
Richmond, 1992
 Buku Teks
Nature all around us : a guide to urban ecology
Beatrix Beisner, Christian Messier, Luc-Alain Giraldeau
The University of Chicago Press, 2013
 Buku Teks
Hubbard, L. Ron, 1911-1986
The way to happiness : a common sense guide to better living.
L. Ron Hubbard Library, 2009
 Multimedia
Hubbard, L. Ron, 1911-1986
The way to happiness : a common sense guide to better living.
L. Ron Hubbard Library, 2009
 Multimedia