As far as citing a Lumen text using APA or MLA, it can be a bit tricky because we do not have one author. We have several writers and contributors who have been involved in the creation and curation of our textbooks.
We suggest you use the citation process for an eBook with the author listed as Lumen Learning. You can use this page from the APA website as a reference point and this page from the OWL Purdue website as your MLA reference point. You will want to list the current year as we are continuously updating our texts.
Citation practices have not quite yet caught up with OER so we try to make use of the best current practice listed by APA, MLA, Chicago, etc. This is a challenge of the OER "publication" model.
Here is what we advise. We have provided details below using our Psychology course as an example:
Lumen Learning (2022). Introduction to Psychology. Lumen Learning https://courses.
Introduction to Psychology. Lumen Learning, 2022 https://courses.lumenlearning.