Gaya APA
HIGGINS, J, M. et al (1994).
101 Creative Problem Solving Techniques : The Handbook of New Ideas for Business .
New York:
New Management Publishing Company.
Gaya MLA
HIGGINS, James, M.. et al.
"101 Creative Problem Solving Techniques : The Handbook of New Ideas for Business".
New York:
New Management Publishing Company,
1994.
Text.