APA引文

Vega, O. A., & Vinasco-Salazar, R. E. (2014). CAPTCHA: A solution for computer security or a problem to access/ use the web?

Citación estilo Chicago

Vega, Omar Antonio, y Ronald Eduardo Vinasco-Salazar. CAPTCHA: A Solution for Computer Security or a Problem to Access/ Use the Web? 2014.

MLA引文

Vega, Omar Antonio, y Ronald Eduardo Vinasco-Salazar. CAPTCHA: A Solution for Computer Security or a Problem to Access/ Use the Web? 2014.

警告：這些引文格式不一定是100％准確.