International HISPA Congress Lisbon, P. (1982). Proceedings of the IX International HISPA Congress. [Lisbon, Portugal]: Ministerio da Qualidade de Vida.
शिकागो स्टाइल उद्धरणInternational HISPA Congress Lisbon, Portugal). Proceedings of the IX International HISPA Congress. [Lisbon, Portugal]: Ministerio da Qualidade de Vida, 1982.
एमएलए उद्धरणInternational HISPA Congress Lisbon, Portugal). Proceedings of the IX International HISPA Congress. [Lisbon, Portugal]: Ministerio da Qualidade de Vida, 1982.
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