CABRAL, Amílcar. Return to the Source: Selected Speeches of Amilcar Cabral. Organização de Africa Information Service. Nova York: Monthly Review Press; Africa Information Service, 1973. ISBN 0-85345-345-4.
CABRAL, Amílcar. Return to the Source: Selected Speeches of Amilcar Cabral. Organização de Africa Information Service. Nova York: Monthly Review Press; Africa Information Service, 1973. ISBN 0-85345-345-4.