APA引文

León Ortega, H. S. (2020). China-US rivalry as a factor in the development of modern Russian-American relations.

Citación estilo Chicago

León Ortega, Helen Sugelly. China-US Rivalry As a Factor in the Development of Modern Russian-American Relations. 2020.

MLA引文

León Ortega, Helen Sugelly. China-US Rivalry As a Factor in the Development of Modern Russian-American Relations. 2020.

警告：這些引文格式不一定是100％准確.