Cita APA (7th ed.)

Dawson, E. Y. (1963). The cacti. W M. C. Brown.

Cita Chicago (17th ed.)

Dawson, E. Yale. The Cacti. Dubuque: W M. C. Brown, 1963.

Cita MLA (9th ed.)

Dawson, E. Yale. The Cacti. W M. C. Brown, 1963.