APA (7th ed.) Citation

Hubbard, L. R. (2012). Letters and journals: Early years of adventure. Bridge Publications.

Chicago Style (17th ed.) Citation

Hubbard, L. Ron. Letters and Journals: Early Years of Adventure. Commerce, California: Bridge Publications, 2012.

MLA (9th ed.) Citation

Hubbard, L. Ron. Letters and Journals: Early Years of Adventure. Bridge Publications, 2012.