Cita APA (7th ed.)

Ingels, J. E. (2004). Landscaping principles and practices (6th ed.). Delmar Learning, Inc.

Cita Chicago (17th ed.)

Ingels, Jack E. Landscaping Principles and Practices. 6th ed. Australia: Delmar Learning, Inc, 2004.

Cita MLA (9th ed.)

Ingels, Jack E. Landscaping Principles and Practices. 6th ed. Delmar Learning, Inc, 2004.