Gaya APA

Swanson, C, P., Klausmeier, H, J. (NULL). Learning and teaching concepts a strategy for testing applications ì of theory . New: New York: Academic; 1980.

Gaya MLA

Swanson, Carl, P.., Klausmeier, Herbert, J. "Learning and teaching concepts a strategy for testing applications ì of theory". New: New York: Academic; 1980, NULL. Text.