APA (7th ed.) Citation

United States Travel Data Center. (1975). Travel economic impact model. The Center.

Chicago Style (17th ed.) Citation

United States Travel Data Center. Travel Economic Impact Model. Washington, D. C: The Center, 1975.

MLA (9th ed.) Citation

United States Travel Data Center. Travel Economic Impact Model. The Center, 1975.

Warning: These citations may not always be 100% accurate.