Gaya APA

Schauberger, V., Coaps, I, , I. (1999). The Fertile Earth : Nature's Energies in Agriculture soil Fertilisation and Forestry . S.L: Collum coats.

Gaya MLA

Schauberger, Viktor., Coaps, I.j, , II.Collum. "The Fertile Earth : Nature's Energies in Agriculture soil Fertilisation and Forestry". S.L: Collum coats, 1999. Text.