Παραπομπή APA

Brady, N. C., & Weil, R. R. (2002). nature and properties of soils (13th ed.). Pearson Education.

Παραπομπή Chicago Style

Brady, Nyle C., και Ray R. Weil. Nature and Properties of Soils. 13th ed. Delhi: Pearson Education, 2002.

Παραπομπή MLA

Brady, Nyle C., και Ray R. Weil. Nature and Properties of Soils. 13th ed. Pearson Education, 2002.