serialyzers.py

class PersonSerializer(serializers.ModelSerializer):
    class Meta:
        model=Person
        fields=(
            '__all__'
        )

class ReunionSerializerLink(serializers.HyperlinkedModelSerializer):

    class Meta:
        model=Reunion
        fields=(
            'id',
            'fecha',
            'hora',
            'asunto',
            'persona',
        )
        extra_kwargs={
            'persona':{'view_name':'persona_app:detalle','lookup_field':'pk'}
        }

views.py

class PersonDetailView(RetrieveAPIView):

    serializer_class= PersonSerializer
    queryset= Person.objects.all() #en vez de all se puede poner el filter



class ReunionApilistaLink(ListAPIView):

    # serializer_class= PersonaSerializer
    serializer_class= ReunionSerializerLink

    def get_queryset(self):
        return Reunion.objects.all()


urls.py

#
from django.urls import path,re_path
#
from .import views

app_name='persona_app'

urlpatterns = [
    path(
        'api/persona/detail/<pk>',
        views.PersonDetailView.as_view(),
        name='detalle'
    ),
        path(
        'api/reuniones-link/',
        views.ReunionApilistaLink.as_view(),
        name=''
    ),
]