Energy for rural development : renewable resources and alternative technologies for developing countries report of an Ad Hoc Panel of the Advisory Committe on Technology Innovation Board on Science and Technology for International Relations
National Academy of Sciences , 1976
 Buku Teks
Raven, Peter H.
Biology of plants
Worth Publisher, 1986
 Buku Referensi
Laetsch, Watson M.
Plants : basic concept in botany
Little, Brown, 1979
 Buku Teks
Corner, E.J.H.
The life of plants / E.J.H. Corner
The World Publishing Company, 1964
 Buku Teks
Warren, William
Tropical garden plants
Thames and Hudson, 1997
 Buku Referensi