Hubbard, L. R. (2012). Early years of adventure letters & journals. Bridge Publications.
芝加哥风格引文Hubbard, L. Ron. Early Years of Adventure Letters & Journals. Commerce, Califonia: Bridge Publications, 2012.
MLA引文Hubbard, L. Ron. Early Years of Adventure Letters & Journals. Bridge Publications, 2012.
警告：这些引文格式不一定是100％准确.