Gaya APA
Lukas, G., Lukas, J.
(1986).
LOGO : principles, programming and projects
(
cet.1)
.
Monterey:
Brooks/Cole.
Gaya MLA
Lukas, George., Lukas, Joan.
"LOGO : principles, programming and projects".
cet.1
Monterey:
Brooks/Cole,
1986.
Text.