Gaya APA

Petrillo, J, E., Grenell, P. (1985). The urban edge: where the city meets the sea . California: The California State Coastal Conservancy.

Gaya MLA

Petrillo, Joseph, E.., Grenell, Peter. "The urban edge: where the city meets the sea". California: The California State Coastal Conservancy, 1985. Printed Book.