Merriam-Webster's Dictionary of Quotations
Merriam-Webster
Gnostic Religion in Antiquity
Roelof van den Broek
Krebs Natürlich Heilen
Walter Last
Europe in the High Middle Ages
William Chester Jordan
Deciphering Ancient Minds
David Lewis-Williams
An Introduction to English Slang: A Description of Its Morphology, ...
Elisa Mattiello