APA引文

Sheldon, V. A. (1941). Americans on guard. Johnson Pub. Co.

Chicago Style (17th ed.) Citation

Sheldon, Vivian A. Americans on Guard. Richmond: Johnson Pub. Co, 1941.

MLA引文

Sheldon, Vivian A. Americans on Guard. Johnson Pub. Co, 1941.

警告：这些引文格式不一定是100％准确.