Gaya APA
GREENBLAT, C, S. (1989).
DESIGNING GAMES AND SIMULATIONS: AN ILLUSTRATED HANDBOOK .
United States of America:
sage publications.
Gaya MLA
GREENBLAT, CATHY, STEIN.
"DESIGNING GAMES AND SIMULATIONS: AN ILLUSTRATED HANDBOOK".
United States of America:
sage publications,
1989.
Text.