Cita APA

Ruffin, E. 1., & Sitterson, J. C. 1. (1961). An essay on calcareous manures. Cambridge, Massachusetts: The Belknap Press of Harvard University Press.

Citación estilo Chicago

Ruffin, Edmund 1794-1865, y J. Carlyle 1911-1995 Sitterson. An Essay On Calcareous Manures. Cambridge, Massachusetts: The Belknap Press of Harvard University Press, 1961.

Cita MLA

Ruffin, Edmund 1794-1865, y J. Carlyle 1911-1995 Sitterson. An Essay On Calcareous Manures. Cambridge, Massachusetts: The Belknap Press of Harvard University Press, 1961.