Gaya APA

Frey, Darrell. (2011). Bioshelter Market Garden : A Permaculture Farm . Canada: New Society Publishers.

Gaya Chicago

Frey, Darrell. Bioshelter Market Garden : A Permaculture Farm. Canada: New Society Publishers, 2011. Teks.

Gaya MLA

Frey, Darrell. Bioshelter Market Garden : A Permaculture Farm. Canada: New Society Publishers, 2011. Teks.

Gaya Turabian

Frey, Darrell. Bioshelter Market Garden : A Permaculture Farm. Canada: New Society Publishers, 2011. Teks.