APA (7th ed.) Citation

Smith, H. P., & May, I. M. (1975). Agricultural oral history interview with H.P. Smith. [publisher not identified].

Chicago Style (17th ed.) Citation

Smith, Harris Pearson, and Irvin M. May. Agricultural Oral History Interview with H.P. Smith. [Place of publication not identified]: [publisher not identified], 1975.

MLA (9th ed.) Citation

Smith, Harris Pearson, and Irvin M. May. Agricultural Oral History Interview with H.P. Smith. [publisher not identified], 1975.