Cita APA (7th ed.)

Hackney, F., & Hackney, I. (1990). The art of the world's greatest watercolourists. Quantum Books.

Cita Chicago (17th ed.)

Hackney, Fiona, i Isla Hackney. The Art of the World's Greatest Watercolourists. London: Quantum Books, 1990.

Cita MLA (9th ed.)

Hackney, Fiona, i Isla Hackney. The Art of the World's Greatest Watercolourists. Quantum Books, 1990.