Arne Ryde Symposium Helsingor, Denmark, Carlsson, H., & Larsson, B. (1990). Problems of the mixed economy: Cooperation, efficiency, and stability papers presented at the 9th Arne Ryde Symposium Elsinore, Denmark, 1987. North-Holland, Distributors for the U.S. and Canada, Elsevier Science Pub. Co..
Παραπομπή σε μορφή Chicago (17η εκδ.)Arne Ryde Symposium Helsingor, Denmark, Hans Carlsson, και Bo Larsson. Problems of the Mixed Economy: Cooperation, Efficiency, and Stability Papers Presented at the 9th Arne Ryde Symposium Elsinore, Denmark, 1987. Amsterdam : New York: North-Holland, Distributors for the U.S. and Canada, Elsevier Science Pub. Co., 1990.
Παραπομπή σε μορφή MLA (9th εκδ.)Arne Ryde Symposium Helsingor, Denmark, et al. Problems of the Mixed Economy: Cooperation, Efficiency, and Stability Papers Presented at the 9th Arne Ryde Symposium Elsinore, Denmark, 1987. North-Holland, Distributors for the U.S. and Canada, Elsevier Science Pub. Co., 1990.