APA (7th ed.) Citation

Harhoff, D., Orlin, J. B., & Hippel, E. v. (1991). Strategic spillover production, vertival organization, and incentives for research and development.

Chicago Style (17th ed.) Citation

Harhoff, Dietmar, James B. Orlin, and Eric von Hippel. Strategic Spillover Production, Vertival Organization, and Incentives for Research and Development. 1991.

MLA (9th ed.) Citation

Harhoff, Dietmar, et al. Strategic Spillover Production, Vertival Organization, and Incentives for Research and Development. 1991.