Cita APA (7a ed.)

Boyer, P. S., & Boyer, P. (1978). Urban masses and moral order in America, 1820-1920. Harvard Univ. Pr.

Cita Chicago Style (17a ed.)

Boyer, Paul S., y Paul Boyer. Urban Masses and Moral Order in America, 1820-1920. Cambridge, Mass. [u.a.]: Harvard Univ. Pr, 1978.

Cita MLA (9a ed.)

Boyer, Paul S., y Paul Boyer. Urban Masses and Moral Order in America, 1820-1920. Harvard Univ. Pr, 1978.