APA引文

Barrows, H. H., & Putnam Parker, E. United States and Canada.

Chicago Style (17th ed.) Citation

Barrows, Harlan H., and Edith Putnam Parker. United States and Canada.

MLA引文

Barrows, Harlan H., and Edith Putnam Parker. United States and Canada.

警告：這些引文格式不一定是100％准確.