APA (7th ed.) Citation

Horticopia, Inc, & Gilman, E. F. (1998). Horticopia (Ed. 2.). Horticopia.

Chicago Style (17th ed.) Citation

Horticopia, Inc, and Edward F. Gilman. Horticopia. Ed. 2. Purcellville, Va.: Horticopia, 1998.

MLA (9th ed.) Citation

Horticopia, Inc, and Edward F. Gilman. Horticopia. Ed. 2. Horticopia, 1998.