APA (7th ed.) Citation

Helmholtz, H. v., & Atkinson, E. (1881). Popular lectures on scientific subjects: Second series. Longmans, Green.

Chicago Style (17th ed.) Citation

Helmholtz, Hermann von, and E. Atkinson. Popular Lectures on Scientific Subjects: Second Series. London: Longmans, Green, 1881.

MLA (8th ed.) Citation

Helmholtz, Hermann von, and E. Atkinson. Popular Lectures on Scientific Subjects: Second Series. Longmans, Green, 1881.