Cita APA (7a ed.)

Marshall, A., & Guillebaud, C. W. (1961). Principles of economics (9th (variorum) ed. / with annotations by C.W. Guillebaud.). Macmillan.

Cita Chicago Style (17a ed.)

Marshall, Alfred, y Claude William Guillebaud. Principles of Economics. 9th (variorum) ed. / with annotations by C.W. Guillebaud. London [etc.]: Macmillan, 1961.

Cita MLA (9a ed.)

Marshall, Alfred, y Claude William Guillebaud. Principles of Economics. 9th (variorum) ed. / with annotations by C.W. Guillebaud. Macmillan, 1961.