APA引文

Duncker, K. (1945). On problem-solving. American Psychological Association.

Chicago Style (17th ed.) Citation

Duncker, Karl. On Problem-solving. Washington, D.C.: American Psychological Association, 1945.

MLA引文

Duncker, Karl. On Problem-solving. American Psychological Association, 1945.

警告：這些引文格式不一定是100％准確.