APA (7th ed.) Citation

Hubbard, L. R. (2012). Dianetics letters & journals. Bridge Publications.

Chicago Style (17th ed.) Citation

Hubbard, L. Ron. Dianetics Letters & Journals. Commerce, Calif: Bridge Publications, 2012.

MLA (9th ed.) Citation

Hubbard, L. Ron. Dianetics Letters & Journals. Bridge Publications, 2012.