Παραπομπή APA

Grant, F. L., & Hill, A. M. (1958). Commercial arithmetic. Longmans.

Παραπομπή Chicago Style

Grant, Frank L., και Alexander M. Hill. Commercial Arithmetic. London: Longmans, 1958.

Παραπομπή MLA

Grant, Frank L., και Alexander M. Hill. Commercial Arithmetic. Longmans, 1958.