Unknown. (2023). The use book regulations and instructions for the use of the National forests. Government Printing Office, Washington.
芝加哥风格引文Unknown. The Use Book Regulations and Instructions for the Use of the National Forests. Government Printing Office, Washington, 2023.
MLA引文Unknown. The Use Book Regulations and Instructions for the Use of the National Forests. Government Printing Office, Washington, 2023.
警告：这些引文格式不一定是100％准确.