Gaya APA

Lumsdaine, E., Lumsdaine, M. (1995). Creative Problem Solving : Thinking Skills For a Changing World International Editions . London: McGraw-Hill Education.

Gaya MLA

Lumsdaine, Edward., Lumsdaine, Monika. "Creative Problem Solving : Thinking Skills For a Changing World International Editions". London: McGraw-Hill Education, 1995. Printed.