APA (7th ed.) Citation

Zhao, S., & Lao, D. (2021). Fundamental theories and their applications of the calculus of variations. Springer. https://doi.org/10.1007/978-981-15-6070-5

Chicago Style (17th ed.) Citation

Zhao, Shanshan, and Dazhong Lao. Fundamental Theories and Their Applications of the Calculus of Variations. Singapore: Springer, 2021. https://doi.org/10.1007/978-981-15-6070-5.

MLA (9th ed.) Citation

Zhao, Shanshan, and Dazhong Lao. Fundamental Theories and Their Applications of the Calculus of Variations. Springer, 2021. https://doi.org/10.1007/978-981-15-6070-5.