APA (7th ed.) Citation

Helmholtz, H. v., Ochinnikov, V., & Kuznetzov, B. (1880). Popular lectures on scientific subjects (2nd ed.). Longmans, Green, and Co..

Chicago Style (17th ed.) Citation

Helmholtz, Hermann von, V. Ochinnikov, and Boris Kuznetzov. Popular Lectures on Scientific Subjects. 2nd ed. London: Longmans, Green, and Co., 1880.

MLA (8th ed.) Citation

Helmholtz, Hermann von, et al. Popular Lectures on Scientific Subjects. 2nd ed. Longmans, Green, and Co., 1880.