APA (7th ed.) Citation

Otten, D. B., & Hagen, P. J. t. (1990). On the role of delegation and inheritance in object-oriented database systems.

Chicago Style (17th ed.) Citation

Otten, D. B., and P. J. ten Hagen. On the Role of Delegation and Inheritance in Object-oriented Database Systems. Amsterdam, 1990.

MLA (9th ed.) Citation

Otten, D. B., and P. J. ten Hagen. On the Role of Delegation and Inheritance in Object-oriented Database Systems. 1990.