APA (7th ed.) Citation

Duggal, K. L. Space time manifolds and contact structures. Wiley.

Chicago Style (17th ed.) Citation

Duggal, K. L. Space Time Manifolds and Contact Structures. Wiley.

MLA (9th ed.) Citation

Duggal, K. L. Space Time Manifolds and Contact Structures. Wiley.

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