Book Review: Sovereign women in a Muslim kingdom: the Sultanahs of Aceh, 1641-1699 by Sher Banu A.L. Khan. reprint. Singapore: NUS Press, 2018, 336 pp. ISBN 978-981-4722-20-9 - Ahmad, Siti Nuraishah (NAM Institute for the Empowerment of Women; Universiti Putra Malaysia, 2019)