APA引文

Federico. (2001). Messages from heaven. Immaculate Heart Creations.

Chicago Style (17th ed.) Citation

Federico. Messages from Heaven. Florida: Immaculate Heart Creations, 2001.

MLA引文

Federico. Messages from Heaven. Immaculate Heart Creations, 2001.

警告：这些引文格式不一定是100％准确.