McCarthy, J. A. "An Indigenous and Not Exotic Plant": Toward a history of Germanics at Penn / John A. McCarthy. Teaching German in twentieth century America.(2001).

McCarthy, John A. ""An Indigenous and Not Exotic Plant": Toward a History of Germanics at Penn / John A. McCarthy." Teaching German in Twentieth Century America.(2001) .

McCarthy, John A. ""An Indigenous and Not Exotic Plant": Toward a History of Germanics at Penn / John A. McCarthy." Teaching German in Twentieth Century America.(2001), .