Gaya APA
CETRON, MARVIN. (1982).
ENCOUNTERS WITH THE FUTURE : A FORECAST OF LIFE INTO THE 21ST CENTURY .
NEW YORK:
MC GRAW HILL.
Gaya Chicago
CETRON, MARVIN.
ENCOUNTERS WITH THE FUTURE : A FORECAST OF LIFE INTO THE 21ST CENTURY.
NEW YORK:
MC GRAW HILL,
1982.
Text.
Gaya MLA
CETRON, MARVIN.
ENCOUNTERS WITH THE FUTURE : A FORECAST OF LIFE INTO THE 21ST CENTURY.
NEW YORK:
MC GRAW HILL,
1982.
Text.
Gaya Turabian
CETRON, MARVIN.
ENCOUNTERS WITH THE FUTURE : A FORECAST OF LIFE INTO THE 21ST CENTURY.
NEW YORK:
MC GRAW HILL,
1982.
Print.