Gaya APA

Swanson, C, P. (NULL). Books in print 1976 vol. 4 titles L-Z . New: New York: R.R. Bowker; 1976.

Gaya MLA

Swanson, Carl, P.. "Books in print 1976 vol. 4 titles L-Z". New: New York: R.R. Bowker; 1976, NULL. Text.