Cita APA (7th ed.)
Porter, F., Leigh, T., & Spring, J. (2005). Material witness: The selected letters of Fairfield Porter. University of Michigan Press.
Cita Chicago (17th ed.)
Porter, Fairfield, Ted Leigh, i Justin Spring. Material Witness: The Selected Letters of Fairfield Porter. Ann Arbor: University of Michigan Press, 2005.
Cita MLA (9th ed.)
Porter, Fairfield, et al. Material Witness: The Selected Letters of Fairfield Porter. University of Michigan Press, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.