Casis, R. J. (2016). The law on contracts. LexisNexis.
Chicago Style aipamenaCasis, Rommel J. The Law on Contracts. Singapore: LexisNexis, 2016.
MLA aipamenaCasis, Rommel J. The Law on Contracts. LexisNexis, 2016.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.