APA (7th ed.) Citation

GARDNER, R. K. The Cataloging and Classification of Books. Tanpa Penerbit.

Chicago Style (17th ed.) Citation

GARDNER, Richard K. The Cataloging and Classification of Books. Tanpa Penerbit.

MLA (8th ed.) Citation

GARDNER, Richard K. The Cataloging and Classification of Books. Tanpa Penerbit.

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