APA-viite (7. p.)
ebrary, Inc, & Perkins, W. E. (2011). Nonprofit and charitable sectors: Background and issues. Nova Science Publisher's.
Chicago-viite (17. p.)
ebrary, Inc, ja William E. Perkins. Nonprofit and Charitable Sectors: Background and Issues. Hauppauge, NY: Nova Science Publisher's, 2011.
MLA-viite (9. p.)
ebrary, Inc, ja William E. Perkins. Nonprofit and Charitable Sectors: Background and Issues. Nova Science Publisher's, 2011.
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