1. 2017. https://www.kaggle.com/bigquery/google-analytics-sample 2017. https://www.kaggle.com/bigquery/google-analytics-sample
2. 2022. https://www.statista.com/statistics/276671/global-internet-advertising-expenditure-by-type/ 2022. https://www.statista.com/statistics/276671/global-internet-advertising-expenditure-by-type/
3. 2022. https://www.facebook.com/help/274400362581037 2022. https://www.facebook.com/help/274400362581037
4. 2022. https://advertising.amazon.com/library/guides/media-buying 2022. https://advertising.amazon.com/library/guides/media-buying
5. 2022. https://www.statista.com/statistics/1106617/number-of-pages-seen-buying-session 2022. https://www.statista.com/statistics/1106617/number-of-pages-seen-buying-session