APA

Helper H. R., Fredrickson G. M., . (1968). The impending crisis of the South: how to meet it. Cambridge, Mass: Belknap Press of Harvard University Press.

Chicago

Helper Hinton Rowan, Fredrickson George M, . 1968. The impending crisis of the South: how to meet it. Cambridge, Mass: Belknap Press of Harvard University Press.

Harvard

Helper H. R., Fredrickson G. M., . (1968). The impending crisis of the South: how to meet it. Cambridge, Mass: Belknap Press of Harvard University Press.

MLA

Helper Hinton Rowan, Fredrickson George M, . The impending crisis of the South: how to meet it. Cambridge, Mass: Belknap Press of Harvard University Press. 1968.