Cita APA (7th ed.)

Harpin, W. S. (1976). The second "R": Writing development in the junior school. Allen and Unwin.

Cita Chicago (17th ed.)

Harpin, William Sydney. The Second "R": Writing Development in the Junior School. London: Allen and Unwin, 1976.

Cita MLA (8th ed.)

Harpin, William Sydney. The Second "R": Writing Development in the Junior School. Allen and Unwin, 1976.