Παραπομπή APA

(1965). Shrubs in colour: An amateur gardening encyclopaedia. Collingridge.

Παραπομπή Chicago Style

Shrubs in Colour: An Amateur Gardening Encyclopaedia. London: Collingridge, 1965.

Παραπομπή MLA

Shrubs in Colour: An Amateur Gardening Encyclopaedia. Collingridge, 1965.