APA (7th ed.) Citation

Hollyday, E. F., & Knopman, D. S. (1993). Variation in specific capacity in fractured rocks, Pennsylvania. Ground Water, 31(1), 135.

Chicago Style (17th ed.) Citation

Hollyday, E. F., and D. S. Knopman. "Variation in Specific Capacity in Fractured Rocks, Pennsylvania." Ground Water 31, no. 1 (1993): 135.

MLA (9th ed.) Citation

Hollyday, E. F., and D. S. Knopman. "Variation in Specific Capacity in Fractured Rocks, Pennsylvania." Ground Water, vol. 31, no. 1, 1993, p. 135.