Fekrat, S., Tripahti, R. C., & Tripathi, B. J. (1994). Contact lens-induced ocular disorders. In M. Ruben & M. Guillon (Eds.), A Textbook of Contact Lens Practice (pp. 1045–1066). London: Chapman and Hall.

Fekrat, S., R. C. Tripahti, and B. J. Tripathi. “Contact lens-induced ocular disorders.” In A Textbook of Contact Lens Practice, edited by M. Ruben and M. Guillon, 1045–66. London: Chapman and Hall, 1994.

Fekrat S, Tripahti RC, Tripathi BJ. Contact lens-induced ocular disorders. In: Ruben M, Guillon M, editors. A Textbook of Contact Lens Practice. London: Chapman and Hall; 1994. p. 1045–66.

Fekrat, S., et al. “Contact lens-induced ocular disorders.” A Textbook of Contact Lens Practice, edited by M. Ruben and M. Guillon, Chapman and Hall, 1994, pp. 1045–66.

Fekrat S, Tripahti RC, Tripathi BJ. Contact lens-induced ocular disorders. In: Ruben M, Guillon M, editors. A Textbook of Contact Lens Practice. London: Chapman and Hall; 1994. p. 1045–1066.