APA (7th ed.) Citation

Brock, E. O. d. (1984). Database models and retrieval languages.

Chicago Style (17th ed.) Citation

Brock, Engbert O. de. Database Models and Retrieval Languages. 1984.

MLA (9th ed.) Citation

Brock, Engbert O. de. Database Models and Retrieval Languages. 1984.

Warning: These citations may not always be 100% accurate.