APA (7th ed.) Zitazioa
Knowles, R. (2012). 200 contractual problems and their solutions (3rd ed.). Wiley-Blackwell.
Chicago Style (17th ed.) Zitazioa
Knowles, Roger. 200 Contractual Problems and Their Solutions. 3rd ed. Chichester, U.K. ; Ames, Iowa: Wiley-Blackwell, 2012.
MLA (9th ed.) Zitazioa
Knowles, Roger. 200 Contractual Problems and Their Solutions. 3rd ed. Wiley-Blackwell, 2012.
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