APA (7th ed.) Citation

于永玉主编. 地球卫士. 延边大学出版社.

Chicago Style (17th ed.) Citation

于永玉主编. 地球卫士. 延边大学出版社.

MLA (8th ed.) Citation

于永玉主编. 地球卫士. 延边大学出版社.

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