Kingma, B. R., Irving, S., & Irving, S. (1996). The economics of access versus ownership: The costs and benefits of access to scholarly articles via interlibrary loan and journal subscriptions. New York: Haworth Press.

Kingma, Bruce R., Suzanne Irving, and Suzanne Irving. The Economics of Access Versus Ownership: The Costs and Benefits of Access to Scholarly Articles Via Interlibrary Loan and Journal Subscriptions. New York: Haworth Press, 1996.

Kingma, Bruce R., Suzanne Irving, and Suzanne Irving. The Economics of Access Versus Ownership: The Costs and Benefits of Access to Scholarly Articles Via Interlibrary Loan and Journal Subscriptions. New York: Haworth Press, 1996.