Use this guide to check if Walden Library has the supplemental / recommended readings listed in your course.
Citations for articles list a volume and issue:
Guiller, J., Durndell, A., & Ross, A. (2008). Peer interaction and critical thinking: Face-to-face or online discussion?. Learning and instruction, 18(2), 187-200.
In this example, 18(2) are the volume and issue numbers.
Citations for books list a location and publisher:
Marturano, A., & Gosling, J. (2007). Leadership: The key concepts. London: Routledge.
In this example, London: Routledge shows the location and publisher