Cita APA (7a ed.)

Carroll, R. W., & Showalter, R. E. (1976). Singular and degenerate Cauchy problems. Academic Press.

Cita Chicago Style (17a ed.)

Carroll, Robert W., y R. E. Showalter. Singular and Degenerate Cauchy Problems. New York: Academic Press, 1976.

Cita MLA (8a ed.)

Carroll, Robert W., y R. E. Showalter. Singular and Degenerate Cauchy Problems. Academic Press, 1976.