Cita APA (7th ed.)

Littlefield, D. J. (1968). Twentieth century interpretations of The frogs; a collection of critical essays. Prentice-Hall.

Cita Chicago (17th ed.)

Littlefield, David J. Twentieth Century Interpretations of The Frogs; a Collection of Critical Essays. Englewood Cliffs, N. J: Prentice-Hall, 1968.

Cita MLA (9th ed.)

Littlefield, David J. Twentieth Century Interpretations of The Frogs; a Collection of Critical Essays. Prentice-Hall, 1968.