Gaya APA

Spaventa, L, J., Spaventa, M, L. (2000). Writing to Learn : The Paragraph (Ed. 1). Boston: McGraw-Hil Companies,Inc..

Gaya MLA

Spaventa, Lou, J.., Spaventa, Marilynn, L.. "Writing to Learn : The Paragraph". Ed. 1 Boston: McGraw-Hil Companies,Inc., 2000. Text.