Armbruster, K. Nature writing: Karla Armbruster. Keywords for environmental studies.([2016]).
Chicago-Zitierstil (17. Ausg.)Armbruster, Karla. "Nature Writing: Karla Armbruster." Keywords for Environmental Studies.([2016]) .
MLA-Zitierstil (8. Ausg.)Armbruster, Karla. "Nature Writing: Karla Armbruster." Keywords for Environmental Studies.([2016]), .
警告：這些引文格式不一定是100％准確.