APA (7th ed.) Citation

Sala, O. (1991). The world's best roses. Prentice Hall.

Chicago Style (17th ed.) Citation

Sala, Orietta. The World's Best Roses. New York: Prentice Hall, 1991.

MLA (9th ed.) Citation

Sala, Orietta. The World's Best Roses. Prentice Hall, 1991.