APA-ийн эшлэл(7 дахь хэвлэлт)

ebrary, Inc, & Polanka, S. (2011). No shelf required: E-books in libraries. American Library Association.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

ebrary, Inc, ба Sue Polanka. No Shelf Required: E-books in Libraries. Chicago: American Library Association, 2011.

MLA -ийн эшлэл (9 дэх хэвлэлт)

ebrary, Inc, ба Sue Polanka. No Shelf Required: E-books in Libraries. American Library Association, 2011.