APA (7th ed.) Citation

Leathem, J. G. (1971). The elementary theory of the symmetrical optical instrument (Repr.). Hafner.

Chicago Style (17th ed.) Citation

Leathem, John Gaston. The Elementary Theory of the Symmetrical Optical Instrument. Repr. New York: Hafner, 1971.

MLA (9th ed.) Citation

Leathem, John Gaston. The Elementary Theory of the Symmetrical Optical Instrument. Repr. Hafner, 1971.

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