Cita APA (7th ed.)

Hazlett, T. C. (1988). Land form designs. PDA Pub.

Cita Chicago (17th ed.)

Hazlett, Thomas C. Land Form Designs. Mesa, Ariz: PDA Pub, 1988.

Cita MLA (9th ed.)

Hazlett, Thomas C. Land Form Designs. PDA Pub, 1988.