APA引文

Perry, A., & Roukin, S. (2018). Twenty-one days (Unabridged.). Recorded Books Inc..

Chicago Style (17th ed.) Citation

Perry, Anne, and Samuel Roukin. Twenty-one Days. Unabridged. Prince Frederick: Recorded Books Inc., 2018.

MLA引文

Perry, Anne, and Samuel Roukin. Twenty-one Days. Unabridged. Recorded Books Inc., 2018.

警告：這些引文格式不一定是100％准確.