Cita APA (7a ed.)

Merrill, S., & Grofman, B. (1999). A Unified theory of voting: Directional and proximity spatial models. Cambridge University Press.

Cita Chicago Style (17a ed.)

Merrill, Samuel, y Bernard Grofman. A Unified Theory of Voting: Directional and Proximity Spatial Models. Cambridge [etc.]: Cambridge University Press, 1999.

Cita MLA (9a ed.)

Merrill, Samuel, y Bernard Grofman. A Unified Theory of Voting: Directional and Proximity Spatial Models. Cambridge University Press, 1999.