APA (7th ed.) Citation

Fothergill, J. (1927). The gardener's colour book. Knopf.

Chicago Style (17th ed.) Citation

Fothergill, John. The Gardener's Colour Book. London [u.a.]: Knopf, 1927.

MLA (9th ed.) Citation

Fothergill, John. The Gardener's Colour Book. Knopf, 1927.