Mayer, K. R. (2023). Forest resources of Liberia. United States Department of Agriculture, Washington D C.
芝加哥风格引文Mayer, Karl R. Forest Resources of Liberia. United States Department of Agriculture, Washington D C, 2023.
MLA引文Mayer, Karl R. Forest Resources of Liberia. United States Department of Agriculture, Washington D C, 2023.
警告：这些引文格式不一定是100％准确.