Cita APA (7a ed.)

Troyer, J. R. (1993). Nature's Champion: B. W. Wells, Tar Heel Ecologist. University of North Carolina Press.

Cita Chicago Style (17a ed.)

Troyer, James R. Nature's Champion: B. W. Wells, Tar Heel Ecologist. Chapel Hill: University of North Carolina Press, 1993.

Cita MLA (8a ed.)

Troyer, James R. Nature's Champion: B. W. Wells, Tar Heel Ecologist. University of North Carolina Press, 1993.