Socialismo Y Participación 8 (Setiembre 1979).
Softcover, Lima, Peru: Perugraph Editores, S. A., 1979. Good with no dust jacket.
Softcover, Lima, Peru: Perugraph Editores, S. A., 1979. Good with no dust jacket.
Hardcover, Miami, FL: Edicones Universal, 1974. Very Good in Good dust jacket.