Spence, I. (2003). Royal Horticultural Society garden plants and flowers. Dorling Kindersley.
Chicagoスタイル(17版)引用形式Spence, Ian. Royal Horticultural Society Garden Plants and Flowers. London: Dorling Kindersley, 2003.
MLA(8版)引用形式Spence, Ian. Royal Horticultural Society Garden Plants and Flowers. Dorling Kindersley, 2003.
警告: この引用は必ずしも正確ではありません.