Cita APA

Kimmel, S., & Heise, J. (2003). Virtual reference services: Issues and trends. New York, New York: Haworth Information Press.

Citación estilo Chicago

Kimmel, Stacey, y Jennifer Heise. Virtual Reference Services: Issues and Trends. New York, New York: Haworth Information Press, 2003.

Cita MLA

Kimmel, Stacey, y Jennifer Heise. Virtual Reference Services: Issues and Trends. New York, New York: Haworth Information Press, 2003.