Lenz, J., Siedler, G., & Theede, H. (1978). Biological features of the Baltic. Proceedings of the 5th symposium of the Baltic Marine Biologist Kiel, Federal Republic of Germany (August 29 - September 4, 1978). Kommissions-Verlag Walter G. Muhlai.
Cytowanie według stylu Chicago (wyd. 17)Lenz, Jürgen, Gerold Siedler, i Hans Theede. Biological Features of the Baltic. Proceedings of the 5th Symposium of the Baltic Marine Biologist Kiel, Federal Republic of Germany (August 29 - September 4, 1978). Kiel, Germany: Kommissions-Verlag Walter G. Muhlai, 1978.
Cytowanie według stylu MLA (wyd. 9)Lenz, Jürgen, et al. Biological Features of the Baltic. Proceedings of the 5th Symposium of the Baltic Marine Biologist Kiel, Federal Republic of Germany (August 29 - September 4, 1978). Kommissions-Verlag Walter G. Muhlai, 1978.