OCLC 29388756. Kit, Pilot's Personal Preference, Apollo 11. Smithsonian Air and Space Museum. [2021-03-06]. （原始内容存档于2020-07-28）. Personal Preference Kits (PPKs)

遜尼派

ISBN 9350850079 （英语） Kayadibi, Saim, Istihsan: The Doctrine of Juristic Preference in Islamic Law, The Other Press, 2019, ISBN 9675062479 （英语） Esposito

Found in articles

莱特飞行器

阿波罗11号

OCLC 29388756. Kit, Pilot's Personal Preference, Apollo 11. Smithsonian Air and Space Museum. [2021-03-06]. （原始内容存档于2020-07-28）. Personal Preference Kits (PPKs)

遜尼派

ISBN 9350850079 （英语） Kayadibi, Saim, Istihsan: The Doctrine of Juristic Preference in Islamic Law, The Other Press, 2019, ISBN 9675062479 （英语） Esposito