APA (7th ed.) Citation

Leitão, N. C. Gravity Model and International Trade: A Survey of the Literature. MDPI AG.

Chicago Style (17th ed.) Citation

Leitão, Nuno Carlos. Gravity Model and International Trade: A Survey of the Literature. MDPI AG.

MLA (9th ed.) Citation

Leitão, Nuno Carlos. Gravity Model and International Trade: A Survey of the Literature. MDPI AG.

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