APA
Rai M., . (2022). The Challenges Of 21St Century ( 2Volumes Set ). : Jnanada Prakashan.
Chicago
Rai Markandey, . 2022. The Challenges Of 21St Century ( 2Volumes Set ). : Jnanada Prakashan.
Harvard
Rai M., . (2022). The Challenges Of 21St Century ( 2Volumes Set ). : Jnanada Prakashan.
MLA
Rai Markandey, . The Challenges Of 21St Century ( 2Volumes Set ). : Jnanada Prakashan. 2022.