Coba jelasin Rujukan dari Burung Hantu Punggur dalam bahasa melayu dong

Burung-burung India oleh Grimmett, Inskipp dan Inskipp, ISBN 0-691-04910-6.

Grimmett, Richard; Inskipp, Carol, Inskipp, Tim & Byers, Clive (1999): Birds of India, Pakistan, Nepal, Bangladesh, Bhutan, Sri Lanka, and the Maldives. Princeton University Press, Princeton, N.J.. ISBN 0-691-04910-6

Holt, Denver W., Berkley, Regan; Deppe, Caroline; Enríquez Rocha, Paula L.; Olsen, Penny D.; Petersen, Julie L.; Rangel Salazar, José Luis; Segars, Kelley P. & Wood, Kristin L. (1999): 96. Brown Wood Owl. In: del Hoyo, J.; Elliott, A. & Sargatal, J. (eds): Handbook of Birds of the World, Volume 5: Barn-owls to Hummingbirds: 197-198, plate 12. Lynx Edicions, Barcelona. ISBN 84-87334-25-3