APA (7th ed.) Citation

Ejlersen, R. (1979). The Economic Aspect of the Exchange of Duplicates. Time Studies on Books. A Case Study.

Chicago Style (17th ed.) Citation

Ejlersen, Rita. The Economic Aspect of the Exchange of Duplicates. Time Studies on Books. A Case Study. 1979.

MLA (9th ed.) Citation

Ejlersen, Rita. The Economic Aspect of the Exchange of Duplicates. Time Studies on Books. A Case Study. 1979.

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