APA (7th ed.) Citation

Layton, E., & Layton, F. (1969). Theosophy: Key to understanding (2. Quest book print.). Theosophical Publ. House.

Chicago Style (17th ed.) Citation

Layton, Eunice, and Felix Layton. Theosophy: Key to Understanding. 2. Quest book print. Wheaton, Ill. [u.a.]: Theosophical Publ. House, 1969.

MLA (8th ed.) Citation

Layton, Eunice, and Felix Layton. Theosophy: Key to Understanding. 2. Quest book print. Theosophical Publ. House, 1969.

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