APA (7th ed.) Citation

Linckels, S., & Meinel, C. (2011). E-librarian service: User-friendly semantic search in digital libraries. Springer.

Chicago Style (17th ed.) Citation

Linckels, Serge, and Christoph Meinel. E-librarian Service: User-friendly Semantic Search in Digital Libraries. Berlin [etc.]: Springer, 2011.

MLA (9th ed.) Citation

Linckels, Serge, and Christoph Meinel. E-librarian Service: User-friendly Semantic Search in Digital Libraries. Springer, 2011.