Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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