Turabian (and its parent, the Chicago Manual of Style) documentation format has a consistent rationale:
Bibliography citations, on the other hand, are not a sentence. Periods occur after each basic unit:
Veeneman, Mary M. "Evangelical Ecumenism: The Quest for an Evangelical Tradition." Evangelical Journal 26, no. 2 (September 1, 2008): 56-64.
1. Mary M. Veeneman, "Evangelical Ecumenism: The Quest for an Evangelical Tradition," Evangelical Journal 26, no. 2 (September 1, 2008): 58.
Veeneman, Mary M. Introducing Theological Method: A Survey of Contemporary Theologians and Approaches. Grand Rapids, MI: Baker Academic, 2017.
2. Mary M. Veeneman, Introducing Theological Method: A Survery of Conemporary Theologians and Approaches (Grand Rapids, MI: Baker Academic, 2017), 172.
Green, Joel B., gen. ed. Dictionary of Scripture and Ethics. Grand Rapids, MI.: Baker Academic, 2011.
3. Joel B. Green, gen. ed., Dictionary of Scripture and Ethics (Grand Rapids, MI: Baker Academic, 2011).
Veeneman, Mary M. "Death and Dying." In Dictionary of Scripture and Ethics, ed. Joel B. Green, 206-209. Grand Rapids, MI: Baker Academic, 2011.
4. Mary M. Veeneman, "Death and Dying" in Dictionary of Scripture and Ethics, ed. Joel B. Green, 206-209 (Grand Rapids, MI: Baker Academic, 2011).
More Chicago Style Help.
Your syllabus specifies that you should use Turabian/Chicago Manual of Style, if you are a BTS major, or, for non-BTS majors, Turabian/Chicago Manual of Style or some standard format for your paper, such as APA or MLA.
Purdue University has a helpful website for all of the standard citation styles:
https://owl.english.purdue.edu/
Brandel Library has an online edition of the Chicago Manual of Style:
http://www.chicagomanualofstyle.org/16/contents.html
E-Turabian will format your citation into either bibliography or footnote style:
http://www.eturabian.com/turabian/index.html