APA (7th ed.) Citation

Walker, M. (1979). Robert Penn Warren : a vision earned / (by) Marshall Walker: A vision earned. P. Harris.

Chicago Style (17th ed.) Citation

Walker, Marshall. Robert Penn Warren : A Vision Earned / (by) Marshall Walker: A Vision Earned. Edinburgh: P. Harris, 1979.

MLA (9th ed.) Citation

Walker, Marshall. Robert Penn Warren : A Vision Earned / (by) Marshall Walker: A Vision Earned. P. Harris, 1979.

Warning: These citations may not always be 100% accurate.