APA (7th ed.) Citation

Kirkendall, L. A. (1968). You're maturing now. Science Research Associates.

Chicago Style (17th ed.) Citation

Kirkendall, Lester Allen. You're Maturing Now. Chicago: Science Research Associates, 1968.

MLA (9th ed.) Citation

Kirkendall, Lester Allen. You're Maturing Now. Science Research Associates, 1968.