Cita APA (7a ed.)

Hall, R. A. (1969). Some recent studies on Port-Royal and Vaugelas. [s.n.].

Cita Chicago Style (17a ed.)

Hall, Robert A. Some Recent Studies on Port-Royal and Vaugelas. [S.l.]: [s.n.], 1969.

Cita MLA (9a ed.)

Hall, Robert A. Some Recent Studies on Port-Royal and Vaugelas. [s.n.], 1969.