Cohen, R. S., Wartofsky, M. W., & Stachel, J. J. (1974). For Dirk Struik: Scientific, historical and political essays in honor of Dirk J. Struik. D. Reidel.
Lua i Stíl Chicago (17ú heag.)Cohen, Robert Sonné, Marx W. Wartofsky, agus John J. Stachel. For Dirk Struik: Scientific, Historical and Political Essays in Honor of Dirk J. Struik. Dordrecht ; Boston: D. Reidel, 1974.
Lua MLA (8ú heag.)Cohen, Robert Sonné, et al. For Dirk Struik: Scientific, Historical and Political Essays in Honor of Dirk J. Struik. D. Reidel, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.