Gaya APA
LEHMAN, John. (1991).
SYSTEMS DESIGN IN THE FOURTH GENERATION .
CANADA:
JOHN WILEY & SONS.
Gaya Chicago
LEHMAN, John.
SYSTEMS DESIGN IN THE FOURTH GENERATION.
CANADA:
JOHN WILEY & SONS,
1991.
Text.
Gaya MLA
LEHMAN, John.
SYSTEMS DESIGN IN THE FOURTH GENERATION.
CANADA:
JOHN WILEY & SONS,
1991.
Text.
Gaya Turabian
LEHMAN, John.
SYSTEMS DESIGN IN THE FOURTH GENERATION.
CANADA:
JOHN WILEY & SONS,
1991.
Print.