The wedding scene is loosely adapted from "The Incredible Hulk" (Vol. 1) #319, writer/artist John Byrne's final issue. The original comic story actually had Bruce and Betty to get married and a mentally unstable Thaddeus Ross actually shot Rick Jones during their wedding ceremony.
The full moon in the background of Bruce's Grey Hulk transformation echoes the original comic book, where Bruce would transform every night at sunset.
Rick Jones being turned into a Teenage Hulk and Bruce Banner reverting to his Grey Hulk incarnation following a dip in the nutrient bath follows the original comic book storyline from "The Incredible Hulk" (Vol. 1) #324 by Al Milgrom.
This episode is loosely inspired by "The Incredible Hulk" (Vol. 1) #319 & #324. The whole plot by Al Milgrom from "The Incredible Hulk" (vol.1) #320-323, where the Avengers fought and captured the Hulk was omitted from the story to make it more Hulk centric.