Pashin, J. C. (1991). Regional analysis of the Black Creek-Cobb coalbed-methane target interval, Black Warrior basin, Alabama. Geological Survey of Alabama.
芝加哥风格引文Pashin, Jack C. Regional Analysis of the Black Creek-Cobb Coalbed-methane Target Interval, Black Warrior Basin, Alabama. Tuscaloosa, Ala.: Geological Survey of Alabama, 1991.
MLA引文Pashin, Jack C. Regional Analysis of the Black Creek-Cobb Coalbed-methane Target Interval, Black Warrior Basin, Alabama. Geological Survey of Alabama, 1991.
警告：这些引文格式不一定是100％准确.