Foreign, L. (2019). German grammar. Obafemi Awolowo University.
芝加哥风格引文Foreign, Languages. German Grammar. Obafemi Awolowo University, 2019.
MLA引文Foreign, Languages. German Grammar. Obafemi Awolowo University, 2019.
警告：这些引文格式不一定是100％准确.
APA引文