Cita APA (7th ed.)

Richardson, W. P., & Weyrauch, M. H. (1951). Richardson on contracts. s.n.

Cita Chicago (17th ed.)

Richardson, William Payson, i Martin Henry Weyrauch. Richardson on Contracts. Brooklyn: s.n, 1951.

Cita MLA (9th ed.)

Richardson, William Payson, i Martin Henry Weyrauch. Richardson on Contracts. s.n, 1951.