Cita APA (7th ed.)
Paddock, J. Agricultural origins: Center and noncenters.
Cita Chicago (17th ed.)
Paddock, John. Agricultural Origins: Center and Noncenters.
Cita MLA (9th ed.)
Paddock, John. Agricultural Origins: Center and Noncenters.
Atenció: Aquestes cites poden no estar 100% correctes.