Cita APA (7th ed.)

National Safe Transit Association. Clearwater Beach, Florida, & National Safe Transit Association. (1990). High yield packaging: Proceedings NSTA '90. National Safe Transit Association.

Cita Chicago (17th ed.)

National Safe Transit Association. Clearwater Beach, Florida, i National Safe Transit Association. High Yield Packaging: Proceedings NSTA '90. Chicago, Ill.: National Safe Transit Association, 1990.

Cita MLA (8th ed.)

National Safe Transit Association. Clearwater Beach, Florida, i National Safe Transit Association. High Yield Packaging: Proceedings NSTA '90. National Safe Transit Association, 1990.