Gaya APA
Sleeman, John F. (1953).
Basic Econnomic Problems .
London:
SCM PRESS LTD.
Gaya Chicago
Sleeman, John F.
Basic Econnomic Problems.
London:
SCM PRESS LTD,
1953.
Text.
Gaya MLA
Sleeman, John F.
Basic Econnomic Problems.
London:
SCM PRESS LTD,
1953.
Text.
Gaya Turabian
Sleeman, John F.
Basic Econnomic Problems.
London:
SCM PRESS LTD,
1953.
Print.