Hay, R., & Synge, P. M. (1991). The colour dictionary of garden plants: With house and greenhouse plants (Compact edition.). Bloomsbury Books.
Citazione stile Chigago Style (17a edizione)Hay, Roy, e Patrick M. Synge. The Colour Dictionary of Garden Plants: With House and Greenhouse Plants. Compact edition. Bloomsbury Street, London: Bloomsbury Books, 1991.
Citatione MLA (9a ed.)Hay, Roy, e Patrick M. Synge. The Colour Dictionary of Garden Plants: With House and Greenhouse Plants. Compact edition. Bloomsbury Books, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.