Gaya APA
Weeks, John R.. (1986).
Population : an introduction to concepts and issues (3rd ed.).
Belmont, California:
Wadsworth.
Gaya Chicago
Weeks, John R..
Population : an introduction to concepts and issues.
3rd ed.
Belmont, California:
Wadsworth,
1986.
Text.
Gaya MLA
Weeks, John R..
Population : an introduction to concepts and issues.
3rd ed.
Belmont, California:
Wadsworth,
1986.
Text.
Gaya Turabian
Weeks, John R..
Population : an introduction to concepts and issues.
3rd ed.
Belmont, California:
Wadsworth,
1986.
Print.