MLA

Helmont, Franciscus Mercurius van, 1614-1699. Two hundred queries moderately propounded concerning the doctrine of the revolution of humane souls : and its conformity to the truths of Christianity.. 1684. https://collections.library.yale.edu/catalog/15719036.

APA, 6th edition

Helmont, Franciscus Mercurius van, 1614-1699. (1684)[Two hundred queries moderately propounded concerning the doctrine of the revolution of humane souls : and its conformity to the truths of Christianity.]. https://collections.library.yale.edu/catalog/15719036.