Tonkin-Covell, John. Freyberg : Churchill's Salamander, Hutchinson 1990. ISBN 1-86941-052-1 Barrass, M.B. Air Marshal Sir JohnD'Albiac. Air of Authority
ISBN 978-0-387-90176-3) Denumerable Markov Chains, John G. Kemeny, J. Laurie Snell, Anthony W. Knapp, D.S. Griffeath (1976, ISBN 978-0-387-90177-0) Modular