Cita APA (7a ed.)

Symposium on earth reinforcement Pennnsylvania. (1978). Proceedings. American Society of Civil Engineers.

Cita Chicago Style (17a ed.)

Symposium on earth reinforcement Pennnsylvania. Proceedings. Pennsylvania: American Society of Civil Engineers, 1978.

Cita MLA (9a ed.)

Symposium on earth reinforcement Pennnsylvania. Proceedings. American Society of Civil Engineers, 1978.