Gaya APA

VACCA, R, T., VACCA, J, A, L. (1989). Content area reading (3rd.ed.). [s.l.]: Harper Collins.

Gaya MLA

VACCA, Richard, T.., VACCA, Jo, Anne, L.. "Content area reading". 3rd.ed. [s.l.]: Harper Collins, 1989. Buku.