APA (7th ed.) Citation

Spillman, W. J. (1915). A theory of gravitation and related phenomena. Press of the New era printing company.

Chicago Style (17th ed.) Citation

Spillman, W. J. A Theory of Gravitation and Related Phenomena. Lancaster, Pa.: Press of the New era printing company, 1915.

MLA (8th ed.) Citation

Spillman, W. J. A Theory of Gravitation and Related Phenomena. Press of the New era printing company, 1915.

Warning: These citations may not always be 100% accurate.