APA aipamena

Spelce, D., Rehak, T. R., Metzler, R. W., & Johnson, J. S. (2018). History of U.S. Respirator Approval. J Int Soc Respir Prot.

Chicago Style aipamena

Spelce, David, Timothy R. Rehak, Richard W. Metzler, and James S. Johnson. "History of U.S. Respirator Approval." J Int Soc Respir Prot 2018.

MLA aipamena

Spelce, David, Timothy R. Rehak, Richard W. Metzler, and James S. Johnson. "History of U.S. Respirator Approval." J Int Soc Respir Prot 2018.