Cita APA (7a ed.)
Herrmann, R., Schenck, P., & Wiebelt, M. (1990). On the Measurement of Agricultural Protection: How Price Uncertainty and Limited Substitution Matter. Institut für Weltwirtschaft.
Cita Chicago Style (17a ed.)
Herrmann, Roland, Patricia Schenck, y Manfred Wiebelt. On the Measurement of Agricultural Protection: How Price Uncertainty and Limited Substitution Matter. Kiel: Institut für Weltwirtschaft, 1990.
Cita MLA (9a ed.)
Herrmann, Roland, et al. On the Measurement of Agricultural Protection: How Price Uncertainty and Limited Substitution Matter. Institut für Weltwirtschaft, 1990.
Precaución: Estas citas no son 100% exactas.