Williams, R. I., & Doris, L. (1956). Encyclopedia of accounting systems. Prentice-Hall.
Tohutoru Kātū Chicago (17th ed.)Williams, Robert I., me Lillian Doris. Encyclopedia of Accounting Systems. Englewood Cliffs, N.J.: Prentice-Hall, 1956.
Tohutoro MLA (9th ed.)Williams, Robert I., me Lillian Doris. Encyclopedia of Accounting Systems. Prentice-Hall, 1956.