Unknown. (2023). Golden Jubilee Souvenir, 1912-1962. Forest Research Institute.
芝加哥风格引文Unknown. Golden Jubilee Souvenir, 1912-1962. Forest Research Institute, 2023.
MLA引文Unknown. Golden Jubilee Souvenir, 1912-1962. Forest Research Institute, 2023.
警告：这些引文格式不一定是100％准确.