APA (7th ed.) Citation

Shaler, N. S. (1903). Comparison of features of Earth and Moon. [publisher not identified].

Chicago Style (17th ed.) Citation

Shaler, N. S. Comparison of Features of Earth and Moon. Washington, D.C.: [publisher not identified], 1903.

MLA (9th ed.) Citation

Shaler, N. S. Comparison of Features of Earth and Moon. [publisher not identified], 1903.