APA (7th ed.) Citation

International Congress of Photosynthesis Research Freudenstadt. (1968). Preliminary program and preprints: June 4 - 8, 1968, Freudenstadt (Black Forest), Germany.

Chicago Style (17th ed.) Citation

International Congress of Photosynthesis Research Freudenstadt. Preliminary Program and Preprints: June 4 - 8, 1968, Freudenstadt (Black Forest), Germany. Freudenstadt, 1968.

MLA (9th ed.) Citation

International Congress of Photosynthesis Research Freudenstadt. Preliminary Program and Preprints: June 4 - 8, 1968, Freudenstadt (Black Forest), Germany. 1968.