APA (7th ed.) Citation

(1991). Directories in print part 1 sections 1-18. Gale Research.

Chicago Style (17th ed.) Citation

Directories in Print Part 1 Sections 1-18. Gale Research, 1991.

MLA (8th ed.) Citation

Directories in Print Part 1 Sections 1-18. Gale Research, 1991.

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