APA (7th ed.) Citation

Barus, C. (1901). Experiments with ionized air. [publisher not identified].

Chicago Style (17th ed.) Citation

Barus, Carl. Experiments with Ionized Air. Washington, D.C.: [publisher not identified], 1901.

MLA (9th ed.) Citation

Barus, Carl. Experiments with Ionized Air. [publisher not identified], 1901.