易发久. (2011). 天助自助者: God helps those who help themselves. 凤凰出版社.
Citación estilo Chicago易发久. 天助自助者: God Helps Those Who Help Themselves. 凤凰出版社, 2011.
Cita MLA易发久. 天助自助者: God Helps Those Who Help Themselves. 凤凰出版社, 2011.
警告：这些引文格式不一定是100％准确.
Cita APA