APA引文

Thoreau, H. D. (2010). Walden. Project Gutenberg.

Chicago Style (17th ed.) Citation

Thoreau, Henry David. Walden. To be supplied: Project Gutenberg, 2010.

MLA引文

Thoreau, Henry David. Walden. Project Gutenberg, 2010.

警告：這些引文格式不一定是100％准確.