APA引文

Evans V. Virginia & Obee B. Bob. (2021). Upstream. B2+: Student's book. Newbury, Express Publishing, 2021.

Chicago Style (17th ed.) Citation

Evans V. Virginia and Obee B. Bob. Upstream. B2+: Student's Book. Newbury, Express Publishing, 2021, 2021.

MLA引文

Evans V. Virginia and Obee B. Bob. Upstream. B2+: Student's Book. Newbury, Express Publishing, 2021, 2021.

警告：這些引文格式不一定是100％准確.