APA (7th ed.) Citation

Heikkila, R. C., & Kimberling, W. C. (1992). Election signature retrieval systems. National Clearinghouse on Election Administration, Federal Election Commission.

Chicago Style (17th ed.) Citation

Heikkila, Ralph C., and William C. Kimberling. Election Signature Retrieval Systems. Washington, D.C.: National Clearinghouse on Election Administration, Federal Election Commission, 1992.

MLA (9th ed.) Citation

Heikkila, Ralph C., and William C. Kimberling. Election Signature Retrieval Systems. National Clearinghouse on Election Administration, Federal Election Commission, 1992.