APA (7th ed.) Citation

龚勋. 学拼音. 云南教育出版社.

Chicago Style (17th ed.) Citation

龚勋. 学拼音. 云南教育出版社.

MLA (8th ed.) Citation

龚勋. 学拼音. 云南教育出版社.

Warning: These citations may not always be 100% accurate.