The Turabian Citation System is Chicago Style modified for student papers. It has two citation styles:
Notes-Bibliography (Bibliography Style) -- consists of 3 parts: a superscript number [the in-text signal of a source], a note [footnote or endnote informally identifying a source], and bibliography [list formally identifying a sources]. (15.3.1)
Parenthetical Citations-Reference List (Author-Date Style or Reference List Style) -- consists of a parenthetical entry (the in-text signal of a source) (18.3) and References (full bibliographical details for all sources cited and may include items consulted, but not cited) (18.2).
Check with your faculty member to confirm the style details for your course.
The core principles of the Turabian citation system are in Part II of the Manual (Ref LB2369 .T8 2007),
General Introduction to Citation Practices -- Sec. 15, pp. 135-143
Notes-Bibliography Style --
Sec. 16, pp. 144-163 -- The Basic Form
Sec. 17, pp. 164-215 -- Citing Specific Types of Sources
Author-Date Style --
Sec. 18, pp. 216-228 -- The Basic Form
Sec. 19, pp. 229-292 -- Citing Specific Types of Sources
Appendix: Paper Format --
A.1 General Format (margins, typeface, spacing and indent, pagination, titles)
The Chicago Style Manual (16th edition) includes the use of the Digital Object Identifier (DOI). The DOI is a unique string of numbers assigned to electronic journals to identify specific articles [1.74]. DOIs may also be available in electronic/online books [14.167].
DOI Sample: doi:10.1016/j.ridd.2014.10.048.
Option: Make a DOI link active. Precede the DOI number with the following: http://dx.doi.org/
An article's DOI is usually located at the top of the first page of an article. It may also be available in the item's bibliographic record. The final option is the DOI Lookup (link below).
Other stable identifiers of articles are stable/persistent/permalink URLS and accession number are acceptable.
Comprehensive sites cover all aspects of using Chicago style.