Evangelii Nuntiandi (On Evangelization in the Modern World) by Paul VIIncluded in the document is an affirmation of the importance of works of justice as constitutive of the work of evangelization.
Full citation (italicize document title and website name):
Paul VI. Evangelii Nuntiandi (On Evangelization in the Modern World). 8 Dec. 1975. Vatican: The Holy See, w2.vatican.va/content/paul-vi/en/apost_exhortations/documents/hf_p-vi_exh_19751208_evangelii-nuntiandi.html.