Heyer, S. (1983). Picture stories for beginning composition. :.
Trích dẫn kiểu ChicagoHeyer, Sandra. Picture Stories for Beginning Composition. :, 1983.
MLA引文Heyer, Sandra. Picture Stories for Beginning Composition. :, 1983.
警告：这些引文格式不一定是100％准确.
APA引文