APA

Stevenson D. D. E., . (1993). Listening valley. Thorndike, Maine: Thorndike Press.

Chicago

Stevenson D.E Dorothy Emily, . 1993. Listening valley. Thorndike, Maine: Thorndike Press.

Harvard

Stevenson D. D. E., . (1993). Listening valley. Thorndike, Maine: Thorndike Press.

MLA

Stevenson D.E Dorothy Emily, . Listening valley. Thorndike, Maine: Thorndike Press. 1993.