Book,  Part, Title, Chapter, Can.

1    4,   1,    3,   1,  900|   present under the species of bread and wine, to God~the Father
2    4,   1,    3,   1,  925| sacrifice must be offered with bread and with wine in which a
3    4,   1,    3,   1,  925|   water~must be mixed.~§2. The bread must be only wheat and recently
4    4,   1,    3,   1,  926|        given under the form of bread alone, or under both species
5    4,   1,    3,   1,  927|    priest is to use unleavened bread in the~eucharistic celebration