PEARSON, D. (1989). The natural house book: Creating healthy, harmonious and ecologically sound home. Conran Octopus.
Chicago-referens (17:e uppl.)PEARSON, David. The Natural House Book: Creating Healthy, Harmonious and Ecologically Sound Home. London: Conran Octopus, 1989.
MLA-referens (9:e uppl.)PEARSON, David. The Natural House Book: Creating Healthy, Harmonious and Ecologically Sound Home. Conran Octopus, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.