International
Tables for Crystallography Volume A Spacegroup symmetry Edited by M. I. Aroyo © International Union of Crystallography 2016 
International Tables for Crystallography (2016). Vol. A, ch. 2.1, p. 157

The pairs of diagrams for these space groups are similar to those in the previous editions of IT. Each pair consists of a generalposition diagram (right) and a diagram of the symmetry elements (left), both projected along c, as illustrated in Figs. 2.1.3.7 and 2.1.3.8.