Lancaster, R., & Biggs, M. (1998). What houseplant where (1st American ed.). DK Pub..
Cita Chicago Style (17a ed.)Lancaster, Roy, y Matthew Biggs. What Houseplant Where. 1st American ed. New York: DK Pub., 1998.
Cita MLA (8a ed.)Lancaster, Roy, y Matthew Biggs. What Houseplant Where. 1st American ed. DK Pub., 1998.
Precaución: Estas citas no son 100% exactas.