Gill, E. (1940). Social principles & directions extracted from the three papal encyclicals, Rerum novarum, Quadragesimo anno, Divini Redemptoris: Arranged according to subject matter, giving all positive statements of doctrine, and suggestions for a programme of social reform. Printed by Hague, Gill & Davey.

Gill, Eric. Social Principles & Directions Extracted from the Three Papal Encyclicals, Rerum Novarum, Quadragesimo Anno, Divini Redemptoris: Arranged According to Subject Matter, Giving All Positive Statements of Doctrine, and Suggestions for a Programme of Social Reform. High Wycombe [England]: Printed by Hague, Gill & Davey, 1940.

Gill, Eric. Social Principles & Directions Extracted from the Three Papal Encyclicals, Rerum Novarum, Quadragesimo Anno, Divini Redemptoris: Arranged According to Subject Matter, Giving All Positive Statements of Doctrine, and Suggestions for a Programme of Social Reform. Printed by Hague, Gill & Davey, 1940.