versão On-line ISSN 0023-270X
MULDER, Johan F.K. (Frikkie). John Calvin and the 'accursed idolatry' of the papal mass. Koers (Online) [online]. 2014, vol.79, n.4, pp. 1-9. ISSN 0023-270X. http://dx.doi.org/10.4102/KOERS.V79I4.2176.
This article comprises a comparison of article 16 of the Genevan Confession (1536), certain extracts of 'A small tract on Holy Communion (1541)' and a letter to Madame the Duchess of Ferrara (1541), with question 801 of the Heidelberg Catechism (HC80).