APA (7e ed.) Bronvermelding
Guelberth, C. R., & Chiras, D. D. (2003). The natural plaster book: Earth, lime and gypsum plasters for natural homes. New Society Publishers.
Chicago (17e ed.) Bronvermelding
Guelberth, Cedar Rose, en Daniel D. Chiras. The Natural Plaster Book: Earth, Lime and Gypsum Plasters for Natural Homes. Gabriola, B.C.: New Society Publishers, 2003.
MLA (9e ed.) Bronvermelding
Guelberth, Cedar Rose, en Daniel D. Chiras. The Natural Plaster Book: Earth, Lime and Gypsum Plasters for Natural Homes. New Society Publishers, 2003.
Let op: Deze citaties zijn niet altijd 100% accuraat.