APA (7th ed.) Citation

Gagnier, J. (2021). Introduction to cross-sectional studies. SAGE Publications, Ltd..

Chicago Style (17th ed.) Citation

Gagnier, Joel. Introduction to Cross-sectional Studies. London: SAGE Publications, Ltd., 2021.

MLA (9th ed.) Citation

Gagnier, Joel. Introduction to Cross-sectional Studies. SAGE Publications, Ltd., 2021.

Warning: These citations may not always be 100% accurate.