In addition to text-books, his principal publications were:

The Center's principal publication is the Unified Agenda, which is published in the spring and fall of each year.

The principal publication of the Society is the Journal of Individual Psychology.

His principal publications were controversial and chiefly against Erastianism:

The following are a few of his principal publications:

Her principal philosophical publications are in metaethics, Kant, and the history of ethics.

Issues of The Colophon and the principal related publications (48 volumes) were:

Funding was diverted from the Enquirer, once considered to be the company's principal publication, to The Star.

With over 180 published works, here is the list of his principal scientific publications.

The Swiss federal government publishes three principal official publications, listed below.