APA
Columbia University, . (2001). Teachers college Columbia University. [s.l.]: Columbia University.
Chicago
Columbia University, . 2001. Teachers college Columbia University. [s.l.]: Columbia University.
Harvard
Columbia University, . (2001). Teachers college Columbia University. [s.l.]: Columbia University.
MLA
Columbia University, . Teachers college Columbia University. [s.l.]: Columbia University. 2001.
