Cita APA (7th ed.)

Griggs, G. B. (1977). The earth and land use planning. Duxbury.

Cita Chicago (17th ed.)

Griggs, Gary B. The Earth and Land Use Planning. North Scituate: Duxbury, 1977.

Cita MLA (9th ed.)

Griggs, Gary B. The Earth and Land Use Planning. Duxbury, 1977.