APA (7th ed.) Citation

Duggal, K. L. (1990). Space time manifolds and contact structures. Hindawi Limited.

Chicago Style (17th ed.) Citation

Duggal, K. L. Space Time Manifolds and Contact Structures. Hindawi Limited, 1990.

MLA (8th ed.) Citation

Duggal, K. L. Space Time Manifolds and Contact Structures. Hindawi Limited, 1990.

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