Hubbard, L. R. (2012). Early years of adventure letters & journals. Bridge Publications.
Citazione stile Chigago Style (17a edizione)Hubbard, L. Ron. Early Years of Adventure Letters & Journals. Commerce, Califonia: Bridge Publications, 2012.
Citatione MLA (9a ed.)Hubbard, L. Ron. Early Years of Adventure Letters & Journals. Bridge Publications, 2012.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.