how to add to admin.py 3 or more models?

How add to admin.py admin.register for 3 model: Page/PageAdmin/PageListing?
Below screenshot from my code:
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If you have three different models with the name Page, PageAdmin and PageListing (and not three views that all display the same model), then you would register each of those models using the admin decorator.

from django.contrib import admin
from .models import Page, PageAdmin, PageListing

admin.site.register(Page)
admin.site.register(PageAdmin)
admin.site.register(PageListing)

(You could also use the admin.register decorator with custom admin classes if necessary.)

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Ken