Gaya APA
Preston, P. W.. (1982).
Theories of Development .
USA:
Routledge & Kegan Paul Ltd..
Gaya Chicago
Preston, P. W..
Theories of Development.
USA:
Routledge & Kegan Paul Ltd.,
1982.
Text.
Gaya MLA
Preston, P. W..
Theories of Development.
USA:
Routledge & Kegan Paul Ltd.,
1982.
Text.
Gaya Turabian
Preston, P. W..
Theories of Development.
USA:
Routledge & Kegan Paul Ltd.,
1982.
Print.