APA

International Pneumoconioses Conference, International Pneumoconioses Conference & International Pneumoconioses Conference. (1990). Proceedings of the VIIth International Pneumoconioses Conference. Cincinnati, Ohio: National Institute for Occupational Safety and Health.

Chicago

International Pneumoconioses Conference, International Pneumoconioses Conference and International Pneumoconioses Conference. 1990. Proceedings of the VIIth International Pneumoconioses Conference. Cincinnati, Ohio: National Institute for Occupational Safety and Health.

Harvard

International Pneumoconioses Conference, International Pneumoconioses Conference and International Pneumoconioses Conference. (1990). Proceedings of the VIIth International Pneumoconioses Conference. Cincinnati, Ohio: National Institute for Occupational Safety and Health.

MLA

International Pneumoconioses Conference, International Pneumoconioses Conference and International Pneumoconioses Conference. Proceedings of the VIIth International Pneumoconioses Conference. Cincinnati, Ohio: National Institute for Occupational Safety and Health. 1990.