Cita APA

Lamb, B. M. (1991). Letts guide to cacti of the world. United Kingdom: Charles Letts.

Citación estilo Chicago

Lamb, Brian Michael. Letts Guide to Cacti of the World. United Kingdom: Charles Letts, 1991.

Cita MLA

Lamb, Brian Michael. Letts Guide to Cacti of the World. United Kingdom: Charles Letts, 1991.