Lundquist, G. A., & Carver, T. N. (1927). Principles of rural sociology. Ginn.
Lua i Stíl Chicago (17ú heag.)Lundquist, Gustav Adolph, agus Thomas Nixon Carver. Principles of Rural Sociology. Boston: Ginn, 1927.
Lua MLA (9ú heag.)Lundquist, Gustav Adolph, agus Thomas Nixon Carver. Principles of Rural Sociology. Ginn, 1927.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.