APA Style

Summerfield, G., Summerfield, J. (1989). Reading(s) / Geoffrey Summerfield and Judith Summerfield (1). New York: Random House.

MLA Style

Summerfield, Geoffrey., Summerfield, Judith. "Reading(s) / Geoffrey Summerfield and Judith Summerfield". 1 New York: Random House, 1989. Textbook ห้องสมุดทั่วไป.