Cita APA

Henson, B., & Tomajkc, K. G. Electronic reference services: Opportunities and challenges.

Citación estilo Chicago

Henson, Bruce, y Kathy Gillespie Tomajkc. Electronic Reference Services: Opportunities and Challenges.

Cita MLA

Henson, Bruce, y Kathy Gillespie Tomajkc. Electronic Reference Services: Opportunities and Challenges.