APA

Williams R. I., Doris L., . (1969). Encyclopedia of accounting systems. New Jersey: Prentice-Hall.

Chicago

Williams Robert I, Doris Lillian, . 1969. Encyclopedia of accounting systems. New Jersey: Prentice-Hall.

Harvard

Williams R. I., Doris L., . (1969). Encyclopedia of accounting systems. New Jersey: Prentice-Hall.

MLA

Williams Robert I, Doris Lillian, . Encyclopedia of accounting systems. New Jersey: Prentice-Hall. 1969.