APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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