Gaya APA

VILJOEN, A, ;, B, K, H, J. (2005). CPULS (Continous Productive Urban Landscape) Designing urban agriculture for sustainable cities . : Elsevier.

Gaya MLA

VILJOEN, Andre, ;, BOHN,, Katrin;, HOWE,, Joe. "CPULS (Continous Productive Urban Landscape) Designing urban agriculture for sustainable cities". : Elsevier, 2005. Buku.