Southwick, Charles H.
Ecology and the quality of our environment
D. Van Nostrand, 1976
 Buku Teks SO
Southwick, Charles H.
Ecology and the quality of our environment
D. Van Nostrand, 1972
 Buku Teks SO
Media for our time : an anthology
edited by Dennis DeNitto
Holt, Rinehart and Winston, 1971
 Buku Teks SO
Partai politik, pilkada dan media massa
 Artikel Jurnal
McNaughton, S.J.
Ekologi umum = General ecology
Gadjah Mada University Press, 1990
 Buku Teks