1. Sharma VP & Sharma RR, The Strawberry, ICAR, New Delhi, India (2004).
2. Garren R, In The strawberry (N F Childer, Editor), Horticultural Publication, Gainesville, Florida (1981) pp 326–328.
3. Mayer AM & Harel E, Phytochemistry, 18 (1979) 193.
4. Leshem YY, Wurzburger Y, Frimer AA, Barness G & Ferguson IB, In Plant growth substances (PF Waring, Editor), Academic Press, New York (1982) pp 569–578.
5. Perkins-Veazie P, Hort Rev, 17 (1995) 267.