The Ancient world Classics of Western thought ; ; v. 1 by Gochberg Donald S. 4th ed Copyright Year: 1988 ISBN-13: 9780155076822 Available format(s): Classic Audio Log in to read What's an Audio Format Audio format refers to the way an audiobook is recorded. Not all audiobooks have the same formats. Classic Audio: A human reading an audiobook without the text displayed. VOICEtext (H): Human narrator with text that you can follow along with as it reads. VOICEtext (S): Synthetic voice with text you can follow along with as it reads.