American Psychological Association 6th edition

Frey, D. (2020). G20 Expenditures: Healthcare, Education, & The Military. Zenodo. https://doi.org/10.5281/zenodo.3695924

ISO-690 (author-date, English)

FREY, Daniel, 2020. G20 Expenditures: Healthcare, Education, & The Military. Zenodo.

Modern Language Association 9th edition

Frey, D. G20 Expenditures: Healthcare, Education, & The Military. Zenodo, 2020, https://doi.org/10.5281/zenodo.3695924.

Mohr Siebeck - Recht (Deutsch - Österreich)

Frey, Daniel: G20 Expenditures: Healthcare, Education, & The Military, 2020.

Emerald - Harvard

Frey, D. (2020), G20 Expenditures: Healthcare, Education, & The Military, Bd. , Zenodo, verfügbar unter:https://doi.org/10.5281/zenodo.3695924.

Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.