Explanatory and persuasive letter writing : selected results from the second national assessment of writing

MLA

National Assessment of Educational Progress (Project) and National Center for Education Statistics. Explanatory and persuasive letter writing : selected results from the second national assessment of writing. Denver : NAEP ; [Washington]: [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], [1977]

APA

National Assessment of Educational Progress (Project) & National Center for Education Statistics. (1977). Explanatory and persuasive letter writing : selected results from the second national assessment of writing. Denver : NAEP ; [Washington]: [for sale by the Supt. of Docs., U.S. Govt. Print. Off.].

Chicago

National Assessment of Educational Progress (Project) and National Center for Education Statistics. Explanatory and persuasive letter writing : selected results from the second national assessment of writing. Denver : NAEP ; [Washington]: [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], [1977]