Simpul

Buhul atau simpul merupakan sebuah bentuk ikatan pada tali atau benang.^[1]^[2] Ikatan tersebut dapat memiliki manfaat atau dijadikan hiasan.

Dalam matematika, buhul dipelajari dalam bidang teori buhul.

Referensi

Clifford W. Ashley. The Ashley Book of Knots. Doubleday, New York. ISBN 0-385-04025-3
Geoffrey Budworth (1999). The Ultimate Encyclopedia of Knots & Ropework. Annes Publishing Limited. ISBN 1-55267-986-1
John Cassidy (1985). The Klutz Book of Knots. Klutz Press, Palo Alto, California. ISBN 0-932592-10-4
Cyrus L. Day. Knots & Splices. International Marine/McGraw-Hill Companies. ISBN 0-87742-252-4
Raoul Graumont. Handbook of Knots. Cornell Maritime Press/Tidewater Publishers. ISBN 0-87033-030-6
R.S. Lee. All The Knots You Need. Algrove Publishing. ISBN 0-921335-47-4
Allen Padgett and Bruce Smith. On Rope. National Speleological Society. ISBN 0-9615093-2-5
Des Pawson (2001). Pocket Guide to Knots & Splices. Produced for Propsero Books by RPC Publishing Ltd., London. ISBN 1-55267-218-2
Brion Toss. The Complete Rigger's Apprentice. International Marine/McGraw-Hill Companies. ISBN 0-07-064840-9
J.C. Turner and P. van de Griend (ed.) (1996). History and Science of Knots. World Scientific. ISBN 981-02-2469-9