Cita APA (7a ed.)
Smith, G. (1981). Some thoughts on sampling design. International Livestock Centre for Africa.
Cita Chicago Style (17a ed.)
Smith, G.E.J. Some Thoughts on Sampling Design. International Livestock Centre for Africa, 1981.
Cita MLA (9a ed.)
Smith, G.E.J. Some Thoughts on Sampling Design. International Livestock Centre for Africa, 1981.
Precaución: Estas citas no son 100% exactas.