Cita APA (7a ed.)

Morris, S. E., & Grimes, M. (1999). A Great Deal of Time and Effort: An Overview of Creating and Maintaining Internet-based Subject Guides.

Cita Chicago Style (17a ed.)

Morris, Sara E., y Marybeth Grimes. A Great Deal of Time and Effort: An Overview of Creating and Maintaining Internet-based Subject Guides. 1999.

Cita MLA (9a ed.)

Morris, Sara E., y Marybeth Grimes. A Great Deal of Time and Effort: An Overview of Creating and Maintaining Internet-based Subject Guides. 1999.