APA (7th ed.) Citation

Long, C. T. (1987). Elementary introduction to number theory (3. ed.). Prentice-Hall.

Chicago Style (17th ed.) Citation

Long, Calvin T. Elementary Introduction to Number Theory. 3. ed. Englewood Cliffs, NJ: Prentice-Hall, 1987.

MLA (9th ed.) Citation

Long, Calvin T. Elementary Introduction to Number Theory. 3. ed. Prentice-Hall, 1987.