Cita APA (7th ed.)

Keillor, G. (2005). Good poems for hard times. Penguin books.

Cita Chicago (17th ed.)

Keillor, Garrison. Good Poems for Hard Times. New York: Penguin books, 2005.

Cita MLA (9th ed.)

Keillor, Garrison. Good Poems for Hard Times. Penguin books, 2005.