孙永生. (2023). 户外运动: Outdoor sports. 辽宁人民出版社.
Lua i Stíl Chicago (17ú heag.)孙永生. 户外运动: Outdoor Sports. 辽宁人民出版社, 2023.
Lua MLA (8ú heag.)孙永生. 户外运动: Outdoor Sports. 辽宁人民出版社, 2023.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.