Cita APA (7a ed.)

俞天一著. (2018). 留痕划过天空. 现代出版社.

Cita Chicago Style (17a ed.)

俞天一著. 留痕划过天空. 现代出版社, 2018.

Cita MLA (8a ed.)

俞天一著. 留痕划过天空. 现代出版社, 2018.