) From Paul to Valentinus: Christians at Rome in the First Two Centuries Published by Fortress Press, 2003 Chapter 33: The Theodotians p. 344-9 ISBN 0-8006-2702-4, ISBN 978-0-8006-2702-7
) From Paul to Valentinus: Christians at Rome in the First Two Centuries Published by Fortress Press, 2003 Chapter 33: The Theodotians p. 344-9 ISBN 0800627024, 9780800627027