Cita APA (7th ed.)

Royal Horticultural Society (Great Britain) & Hay, R. (1974). The dictionary of house plants. McGraw-Hill.

Cita Chicago (17th ed.)

Royal Horticultural Society (Great Britain) i Roy Hay. The Dictionary of House Plants. New York: McGraw-Hill, 1974.

Cita MLA (9th ed.)

Royal Horticultural Society (Great Britain) i Roy Hay. The Dictionary of House Plants. McGraw-Hill, 1974.