Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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