APA引文

Dutwin, P. (2022). Easy english grammar step-by-step (2.).

Chicago Style (17th ed.) Citation

Dutwin, Phyllis. Easy English Grammar Step-by-step. 2. 2022.

MLA引文

Dutwin, Phyllis. Easy English Grammar Step-by-step. 2. 2022.

警告：這些引文格式不一定是100％准確.