 | 2017. Retrieved 23 March 2018. Andy, Ivy (1 January 2012). "Londen Heathrow". Vliegveld Londen (in Dutch). Archived from the original on 1 December 2017... 166 KB (13,558 words) - 13:20, 28 April 2024 |
| 2017. Retrieved 23 March 2018. Andy, Ivy (1 January 2012). "Londen Heathrow". Vliegveld Londen (in Dutch). Archived from the original on 1 December 2017... 166 KB (13,558 words) - 13:20, 28 April 2024 |