APA (7th ed.) Citation

Seefelder, M. (1994). Indigo in culture, science and technology (2., rev. ed.). ecomed.

Chicago Style (17th ed.) Citation

Seefelder, Matthias. Indigo in Culture, Science and Technology. 2., rev. ed. Landsberg: ecomed, 1994.

MLA (9th ed.) Citation

Seefelder, Matthias. Indigo in Culture, Science and Technology. 2., rev. ed. ecomed, 1994.