Cita APA (7a ed.)

Jones, H. M., & Ludwig, R. M. (1972). Guide to American literature and its backgrounds since 1890 (4th ed., rev. and enl.). Harvard University Press.

Cita Chicago Style (17a ed.)

Jones, Howard Mumford, y Richard M. Ludwig. Guide to American Literature and Its Backgrounds Since 1890. 4th ed., rev. and enl. Cambridge (Massachusetts): Harvard University Press, 1972.

Cita MLA (9a ed.)

Jones, Howard Mumford, y Richard M. Ludwig. Guide to American Literature and Its Backgrounds Since 1890. 4th ed., rev. and enl. Harvard University Press, 1972.