APA引文

Altman, D. (2005). Unjustified restrictions on letters to the editor. Public Library of Science.

Chicago Style (17th ed.) Citation

Altman, D. Unjustified Restrictions on Letters to the Editor. Public Library of Science, 2005.

MLA引文

Altman, D. Unjustified Restrictions on Letters to the Editor. Public Library of Science, 2005.

警告：這些引文格式不一定是100％准確.