Ebook is not available for the library for The Case for Christ by Strobel.
Desire of Ages is available online from the Ellen G. White Estate.
See the assignments.tab.
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AHU has a highly regarded religion database called ATLA Religion Database that can guide you to peer-reviewed journal articles, essays, and book reviews on theology and religion.
ATLA stands for American Theological Library Association. They maintain the index.
Coverage areas for ATLA RDB include: Bible, archaeology, and antiquities; human culture and society; church history, missions, and ecumenism; pastoral ministry; world religions and religious studies; and theology, philosophy, and ethics.
Indexes magazine/journal articles, books, reports many times full-text available.