APA استشهاد

Harless, M., & Morlock, H. (1960). Turtles: Perspectives and research. John wiley and sons.

استشهاد بنمط شيكاغو

Harless, Marion, و Henry Morlock. Turtles: Perspectives and Research. New York: John wiley and sons, 1960.

MLA استشهاد

Harless, Marion, و Henry Morlock. Turtles: Perspectives and Research. John wiley and sons, 1960.