Cita APA (7th ed.)
Lyon, T. L. (1931). Fertilizer tests of several soil types. Cornell University.
Cita Chicago (17th ed.)
Lyon, Thomas L. Fertilizer Tests of Several Soil Types. Ithaca: Cornell University, 1931.
Cita MLA (9th ed.)
Lyon, Thomas L. Fertilizer Tests of Several Soil Types. Cornell University, 1931.
Atenció: Aquestes cites poden no estar 100% correctes.