Li, Charles N. and Thompson, Sandra. 1974. Co-verbs in Mandarin Chinese: verbs or prepositions?. Journal of Chinese Linguistics 2. 257-278.
@article{Li-and-Thompson-1974,
author = {Li, Charles N. and Thompson, Sandra},
journal = {Journal of Chinese Linguistics},
number = {3},
pages = {257-278},
title = {Co-verbs in Mandarin Chinese: verbs or prepositions?},
volume = {2},
year = {1974}
}