Gaya APA

Leadbetter, M, E., , . (1998). Writing portfolio activities kit: ready-to-use management techniques and writing activities for grades 7-12 . San Francisco: .

Gaya MLA

Leadbetter, Mary, Ellen., , . "Writing portfolio activities kit: ready-to-use management techniques and writing activities for grades 7-12". San Francisco: , 1998. Text.