@article {14787,
	title = {中国桔梗科植物之初步研究/Preliminary Study on Chinese Campanulaceae},
	journal = {国立北平研究院植物学研究所丛刊/Contributions from the Institute of Botany National Academy of Peiping},
	volume = {3},
	year = {1935},
	author = {P.C.Tsoong}
}
