@book(gilbert2004modern,
 author       = {W.J. Gilbert and W.K. Nicholson},
 year         = {2004},
 title        = {Modern Algebra with Applications},
 series       = {Pure and Applied Mathematics: A Wiley Series of Texts, Monographs and Tracts},
 publisher    = {Wiley},
)
@book(hadlock:field-theory,
 author       = {Charles Robert Hadlock},
 year         = {1975},
 title        = {Field Theory and its Classical Problems},
 volume       = {19},
 publisher    = {Mathematical Association of America},
 doi          = {10.1017/CBO9781614440192},
)
@misc(shapiro:notes-quadratic-extensions,
 author       = {Joel H. Shapiro},
 year         = {1999},
 title        = {Quadratic Extension Fields and Geometric Impossibilities},
 url          = {https://users.math.msu.edu/users/shapiro/Pubvit/Downloads/QuadExtn/quadxtn.html},
)