«Law 635: Amendment to the Portuguese Constitution of 1911, Article 3 - Exception on the Death Penalty Article»(pdf). Diário do Governo da República Portuguesa(en portugués). República Portuguesa. 28 de septiembre de 1916. Consultado el 4 de mayo de 2017. «[Translation]: The Death Penalty (...) cannot be reestablished in any case (...) # with the exception, about the Death Penalty, only in case of war with a foreign country (...) and only in the theater of war.»
