APA引文

Gardner, E. D., & Johnson, C. H. (1934). Placer mining in the western United States. Dept. of the Interior, U.S. Bureau of Mines.

Chicago Style (17th ed.) Citation

Gardner, E. D., and Charles H. Johnson. Placer Mining in the Western United States. [Washington]: Dept. of the Interior, U.S. Bureau of Mines, 1934.

MLA引文

Gardner, E. D., and Charles H. Johnson. Placer Mining in the Western United States. Dept. of the Interior, U.S. Bureau of Mines, 1934.

警告：這些引文格式不一定是100％准確.