@book{Fromm, author = {Fromm, Erich}, title = {Ter ou Ser?, Lisbioa (Editorial Presenca) 1999.}, number = {translation / {\"U}bersetzung}, language = {pt} } @book{Fromm, author = {Fromm, Erich}, title = {Ter ou Ser?, Rio de Janeiro (Zahar Editores) 1977.}, number = {translation / {\"U}bersetzung}, language = {pt} }