APA (7th ed.) Citation

Smith, G. D. (1965). Lectures on soil classification. Soc. Belge de Pédologie.

Chicago Style (17th ed.) Citation

Smith, Guy D. Lectures on Soil Classification. Gent: Soc. Belge de Pédologie, 1965.

MLA (9th ed.) Citation

Smith, Guy D. Lectures on Soil Classification. Soc. Belge de Pédologie, 1965.