Cita APA (7a ed.)
Hart, O. Firms, Contracts, and Finacial Structure. Oxford University.
Cita estilo Chicago (17a ed.)
Hart, Oliver. Firms, Contracts, and Finacial Structure. Oxford, Inglaterra: Oxford University.
Cita MLA (9a ed.)
Hart, Oliver. Firms, Contracts, and Finacial Structure. Oxford University.
警告：这些引文格式不一定是100％准确.