APA引文

Douskalis,Bill. (2001). IP Telephony: The integration of robust volp services (1st.). Pearson Education.

Chicago Edition Citation

Douskalis,Bill. IP Telephony: The Integration of Robust Volp Services. 1st. New Delhi: Pearson Education, 2001.

MLA引文

Douskalis,Bill. IP Telephony: The Integration of Robust Volp Services. 1st. Pearson Education, 2001.

警告：这些引文格式不一定是100％准确.