APA (7th ed.) Citation

Frechtling, D. C. (1975). A model state continuing travel research program. United States Travel Data Center.

Chicago Style (17th ed.) Citation

Frechtling, Douglas C. A Model State Continuing Travel Research Program. Washington, D.C: United States Travel Data Center, 1975.

MLA (9th ed.) Citation

Frechtling, Douglas C. A Model State Continuing Travel Research Program. United States Travel Data Center, 1975.

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