(2007). Aligning Science Assessment Standards: Oklahoma & the 2009 National Assessment of Educational Progress. Regional Educational Laboratory Program.
Chicago-viite (17. p.)Aligning Science Assessment Standards: Oklahoma & the 2009 National Assessment of Educational Progress. Regional Educational Laboratory Program, 2007.
MLA-viite (9. p.)Aligning Science Assessment Standards: Oklahoma & the 2009 National Assessment of Educational Progress. Regional Educational Laboratory Program, 2007.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.