Miller, R. L., & Ehrmann, E. (1979). Hummel: The complete collector's guide and illustrated reference / by Robert L. Miller and Eric Ehrmann (2. ed.). Portfolio Pr. Corp..
Style de citation Chicago (17e éd.)Miller, Robert L., et Eric Ehrmann. Hummel: The Complete Collector's Guide and Illustrated Reference / by Robert L. Miller and Eric Ehrmann. 2. ed. Huntington, NY: Portfolio Pr. Corp., 1979.
Style de citation MLA (8e éd.)Miller, Robert L., et Eric Ehrmann. Hummel: The Complete Collector's Guide and Illustrated Reference / by Robert L. Miller and Eric Ehrmann. 2. ed. Portfolio Pr. Corp., 1979.
Attention : ces citations peuvent ne pas être correctes à 100%.