APA (7th ed.) Citation

Zhu, D., & Dreher, H. (2008). Personalized information retrieval in digital ecosystems. IEEE.

Chicago Style (17th ed.) Citation

Zhu, Dengya, and Heinz Dreher. Personalized Information Retrieval in Digital Ecosystems. IEEE, 2008.

MLA (9th ed.) Citation

Zhu, Dengya, and Heinz Dreher. Personalized Information Retrieval in Digital Ecosystems. IEEE, 2008.

Warning: These citations may not always be 100% accurate.