APA引文

Lawrence, B. (2019). The Louisiana Purchase. Focus Readers.

Chicago Style (17th ed.) Citation

Lawrence, Blythe. The Louisiana Purchase. Lake Elmo, MN: Focus Readers, 2019.

MLA引文

Lawrence, Blythe. The Louisiana Purchase. Focus Readers, 2019.

警告：這些引文格式不一定是100％准確.