Παραπομπή σε μορφή APA (7η εκδ.)

Symposium on MidWest Agriculture 1840-1900, Iowa State University, & Whitaker, J. W. (1974). Farming in the MidWest, 1840-1900. Agricultural History Society,.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Symposium on MidWest Agriculture 1840-1900, Iowa State University, και James W. Whitaker. Farming in the MidWest, 1840-1900. Wash.: Agricultural History Society,, 1974.

Παραπομπή σε μορφή MLA (8th εκδ.)

Symposium on MidWest Agriculture 1840-1900, Iowa State University, και James W. Whitaker. Farming in the MidWest, 1840-1900. Agricultural History Society,, 1974.