APA (7th ed.) Citation

Petras, V. (2001). Entry vocabulary modules - tools for improving subject access to retrieval systems.

Chicago Style (17th ed.) Citation

Petras, Vivien. Entry Vocabulary Modules - Tools for Improving Subject Access to Retrieval Systems. 2001.

MLA (9th ed.) Citation

Petras, Vivien. Entry Vocabulary Modules - Tools for Improving Subject Access to Retrieval Systems. 2001.

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