APA Style
Kupchella, C, E., Hyland, M, C. (1993).
Environmental Science: Living Within the System of Nature (Ed.3, cet.2).
New Jersey:
Prentice-Hall International, Inc..
MLA Style
Kupchella, Charles, E.., Hyland, Margaret, C..
"Environmental Science: Living Within the System of Nature".
Ed.3, cet.2
New Jersey:
Prentice-Hall International, Inc.,
1993.
Text.