Tourist's guide to taking Tram number 28 – the yellow Lisbon guide – Joys of Traveling
Linie 28E der Straßenbahn Lissabon - Wikiwand
Tram 28 Lisbon: The Complete Guide - LisbonGo
Tram 28: The Most Famous Way of Visiting Lisbon - The Lisbon Travel Guide - Updated 2022
Tram 28 - 7 kilometres of Lisbon history — Little Book of Lisbon
The route of the Tram 28, with all the stops, and sights to see along the way. More info here: https://www.timetravelturtle.com/tram-28-lisbon -portugal/
Berühmte Straßenbahn 28 & Rundgang durch Lissabon - Withlocals