Southwick, Charles H.
Ecology and the quality of our environment
D. Van Nostrand, 1972
 Buku Teks
Etherington, John R.
Environment and plant ecology
John Wiley & Sons, 1982
 Buku Teks
Indonesia : resources, ecology, and environment
edited by Joan Hardjono
Oxford University Press, 1991
 Buku Teks
Indonesia : resources, ecology, and environment
edited by Joan Hardjono
Oxford University Press, 1991
 Buku Teks
Etherington, John R.
Environment and plant ecology / John R. Etherington
John Wiley & Sons, 1975
 Buku Teks