"Laws changed because of the Citizenship Act 1977"
When you look at the Citizenship Act 1977, you will see a schedule called Enactments consequentially amended. This schedule is empowered by s 30(2). It lists the laws that are changed because of the Citizenship Act 1977.
You will find several laws listed in this schedule, including the Adoption Act 1955, the Age of Majority Act 1970, and the Consular Privileges and Immunities Act 1971. Other laws listed are the Diplomatic Privileges and Immunities Act 1968, the Status of Children Act 1969, and the Western Samoa Act 1961.
These laws are all affected by the Citizenship Act 1977, which means they have some changes made to them as a result of this act.