Gaya APA
Kupchella, Charles E., Hyland, Margaret C. (1993).
Environmental science : living within the system of nature (3th.ed).
Englewood Cliffs, N.J.:
PTR pretince-hall,inc.
Gaya Chicago
Kupchella, Charles E., Hyland, Margaret C.
Environmental science : living within the system of nature.
3th.ed
Englewood Cliffs, N.J.:
PTR pretince-hall,inc,
1993.
Text.
Gaya MLA
Kupchella, Charles E., Hyland, Margaret C.
Environmental science : living within the system of nature.
3th.ed
Englewood Cliffs, N.J.:
PTR pretince-hall,inc,
1993.
Text.
Gaya Turabian
Kupchella, Charles E., Hyland, Margaret C.
Environmental science : living within the system of nature.
3th.ed
Englewood Cliffs, N.J.:
PTR pretince-hall,inc,
1993.
Print.