APA (7th ed.) Citation

Fitzpatrick, G. L., & Modlin, M. J. (1986). Direct-line distances--international edition. Scarecrow Press.

Chicago Style (17th ed.) Citation

Fitzpatrick, Gary L., and Marilyn J. Modlin. Direct-line Distances--international Edition. Metuchen, N.J.: Scarecrow Press, 1986.

MLA (9th ed.) Citation

Fitzpatrick, Gary L., and Marilyn J. Modlin. Direct-line Distances--international Edition. Scarecrow Press, 1986.