Isagoge Catechetica, explicationi dogmatum theologicorum pleniori praevia. In gratiam juventutis, in Universiate Illustri Aberdonensi, & praecipuè in inclyta ejusdē Academia Regia.
Guild, William,1586-1657.
Aberdoniae : Imprimebat Edvardus Rabanus,
1649.
Anonymous. By William Guild.
Aldis, H.G.  Scotland
ESTC
Wing (2nd ed.)
Catechisms
Great Britain Scotland Aberdeen.