APA Style
Haugen, Einar. (1972).
The Ecology of Language .
California:
Stanford University press.
Chicago Style
Haugen, Einar.
The Ecology of Language.
California:
Stanford University press,
1972.
Text.
MLA Style
Haugen, Einar.
The Ecology of Language.
California:
Stanford University press,
1972.
Text.
Turabian Style
Haugen, Einar.
The Ecology of Language.
California:
Stanford University press,
1972.
Print.