Turtle, G., & Walker, K. (1963). Over the sex border: By Georgina Turtle. With a foreword by Kenneth Walker. Gollancz.

Turtle, Georgina, and Kenneth Walker. Over the Sex Border: By Georgina Turtle. With a Foreword by Kenneth Walker. London: Gollancz, 1963.

Turtle, Georgina, and Kenneth Walker. Over the Sex Border: By Georgina Turtle. With a Foreword by Kenneth Walker. Gollancz, 1963.