Παραπομπή σε μορφή APA (7η εκδ.)

Kässi, O., Lehdonvirta, V., & Stephany, F. (2021). How many online workers are there in the world? A data-driven assessment. European Commission.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Kässi, O., V. Lehdonvirta, και F. Stephany. How Many Online Workers Are There in the World? A Data-driven Assessment. European Commission, 2021.

Παραπομπή σε μορφή MLA (9th εκδ.)

Kässi, O., et al. How Many Online Workers Are There in the World? A Data-driven Assessment. European Commission, 2021.