Cita APA (7th ed.)

Hubbard, L. R. (2012). Horticulture: For a greener world. Bridge Publications.

Cita Chicago (17th ed.)

Hubbard, L. Ron. Horticulture: For a Greener World. Commerce, California: Bridge Publications, 2012.

Cita MLA (9th ed.)

Hubbard, L. Ron. Horticulture: For a Greener World. Bridge Publications, 2012.