APA (7e ed.) Bronvermelding
Carvalho, M. A. d., Wei, T., & Savransky, S. D. (2003). 121 [i.e. One Hundred and Twenty-One] Heuristics for Solving Problems.
Chicago (17e ed.) Bronvermelding
Carvalho, Marco Aurélio de, Tz-Chin Wei, en Semyon D. Savransky. 121 [i.e. One Hundred and Twenty-One] Heuristics for Solving Problems. 2003.
MLA (9e ed.) Bronvermelding
Carvalho, Marco Aurélio de, et al. 121 [i.e. One Hundred and Twenty-One] Heuristics for Solving Problems. 2003.
Let op: Deze citaties zijn niet altijd 100% accuraat.