([National Business Aviation Association (US), Advance Passenger Information System, 2014-04-01, Internet](http://www.nbaa.org/ops/intl/customs-regulatory/apis/))
after ([Wikipedia, under "Advance Passenger Information System", 2014-04-01, Internet](http://en.wikipedia.org/wiki/Advance_Passenger_Information_System)) and ([WCO/IATA/ICAO, Guidelines on Advance Passenger Information, 2013-03-31, Internet](http://www.icao.int/Security/FAL/Documents/1.API%20Guidelines%202013%20Main_%20Text_E.pdf))