The Chun Qiu Zuozhuan is attributed to Zuo Qiuming who lived in the state of Lu in the early 6th century, as a contemporary of Confucius. The book was probably compiled later, during the Warring States period 戰國 (5th cent.-221 BC).
other books on the subject
Ch'i, Ssu-ho. Professor Hung on the Ch'un ch'iu. Yenching Journal of Social Studies 1 & 2 (June 1938 & Feb. 1940) 49-71.
Elman, Benjamin A. Classicism, Politics, and Kinship: The Ch'ang-chou School of New Text Confucianism in Late Imperial China. Berkeley: University of California Press, 1990.
Karlgren, Bernhard. On the Authenticity and Nature of the Tso Chuan. Goteborg: Elanders Boktryckeri Aktiebolag, 1926.
Kennedy, George. Interpretation of the Ch'un Ch'iu. Journal of the American Oriental Society 62 (1942) 40-48.
Legge, James, trans. The Ch'un Ts'eu, with Tso Chuen. The Chinese Classics, Vol. V. London: Trubner, 1872.
Queen, Sarah. From Chronicle to Canon: The Hermeneutics of the Spring and Autumn Annals, According to Tung Chung-shu. Cambridge: Cambridge University Press, 1996.
Yang, Bojun. 楊 伯 峻, comp. Chun qiu Zuo zhuan ci dian 春秋左傳詞典 (Phrase dictionary of the Spring and Autumn Annals and Tso Commentary). Beijing: Xin hua Bookstore, 1985.