APA (7th ed.) Citation

Wolfman, B., Schenk, D. H., & Ring, D. M. (2008). Ethical problems in federal tax practice (4. ed.). Aspen Publ.

Chicago Style (17th ed.) Citation

Wolfman, Bernard, Deborah H. Schenk, and Diane M. Ring. Ethical Problems in Federal Tax Practice. 4. ed. New York, NY [u.a.]: Aspen Publ, 2008.

MLA (9th ed.) Citation

Wolfman, Bernard, et al. Ethical Problems in Federal Tax Practice. 4. ed. Aspen Publ, 2008.