APA

Castle H. N., Mead H. C., Mead G. H. & Project Muse. (2015). The Collected Letters of Henry Northrup Castle. Athens, Ohio: Ohio University Press.

Chicago

Castle Henry Northrup, Mead Helen Castle, Mead George Herbert and Project Muse. 2015. The Collected Letters of Henry Northrup Castle. Athens, Ohio: Ohio University Press.

Harvard

Castle H. N., Mead H. C., Mead G. H. and Project Muse. (2015). The Collected Letters of Henry Northrup Castle. Athens, Ohio: Ohio University Press.

MLA

Castle Henry Northrup, Mead Helen Castle, Mead George Herbert and Project Muse. The Collected Letters of Henry Northrup Castle. Athens, Ohio: Ohio University Press. 2015.