- wikijaa.ru wiki/Frankfurt_City_Link_Line
- iiwiki.ru wiki/Frankfurt_City_Link_Line
- skylineatlas.com frankfurt-city-districts/
- visitfrankfurt.travel en/booking/frankfurt-card
- tripindicator.com which-frankfurt-airport-is-best…Quick Jump links to Frankfurt Airports. ... Frankfurt Airport is an international airport and the main airport serving the city and one of the largest airports in Germany.
- johnnyafrica.com frankfurt-airport-transportation…There are several bus lines which can take you to Frankfurt city centre: 61, 77, 72, 58 and 62 bus lines (daytime buses) and 81 and 7 bus lines (night buses).
- myeuropedays.com frankfurt-transport/You can easily reach Frankfurt City centre by buses (61, 77, 72, 58 and 62) if travelling by day and buses (N81, N7) if travelling by night.