Cita APA (7a ed.)

Drabkin, I. E. (1930). The Copa: An investigation of the problem of Date and Authorship. W.F. Humphrey.

Cita Chicago Style (17a ed.)

Drabkin, Israel E. The Copa: An Investigation of the Problem of Date and Authorship. Geneva: W.F. Humphrey, 1930.

Cita MLA (9a ed.)

Drabkin, Israel E. The Copa: An Investigation of the Problem of Date and Authorship. W.F. Humphrey, 1930.