Understanding sex.
Introductory note by Eleanor Sekerak and John Switzer. Illustrated by Lee Ward.

APA Citation

Kirkendall, L. Allen. (19571947). Understanding sex. Chicago: Science Research Associates.

MLA Citation

Kirkendall, Lester Allen, 1903-1991. Understanding Sex. Chicago: Science Research Associates, 19571947.

Warning: These citations may not always be complete (especially for serials).