Needham, J. G. (1913). Natural History of the Farm: A Guide to the Practical Study of the Sources of Our Living in Wild Nature. The Comstock publishing company.
Cita Chicago (17th ed.)Needham, James G. Natural History of the Farm: A Guide to the Practical Study of the Sources of Our Living in Wild Nature. Ithaca, N.Y.: The Comstock publishing company, 1913.
Cita MLA (9th ed.)Needham, James G. Natural History of the Farm: A Guide to the Practical Study of the Sources of Our Living in Wild Nature. The Comstock publishing company, 1913.
Atenció: Aquestes cites poden no estar 100% correctes.