Gaya APA
Owen, Oliver S.. (1975).
Natural resource conservation : An ecological approach (text).
New York:
Macmillan Publishing.
Gaya Chicago
Owen, Oliver S..
Natural resource conservation : An ecological approach.
text
New York:
Macmillan Publishing,
1975.
.
Gaya MLA
Owen, Oliver S..
Natural resource conservation : An ecological approach.
text
New York:
Macmillan Publishing,
1975.
.
Gaya Turabian
Owen, Oliver S..
Natural resource conservation : An ecological approach.
text
New York:
Macmillan Publishing,
1975.
.