博佩尔 & 方政. 闪击波兰: The Attack on Poland. 京华出版社.
Lua i Stíl Chicago (17ú heag.)博佩尔 agus 方政. 闪击波兰: The Attack on Poland. 京华出版社.
Lua MLA (8ú heag.)博佩尔 agus 方政. 闪击波兰: The Attack on Poland. 京华出版社.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.