Gaya APA
Kruhl, J, H. (2017).
Drawing Geological Structures the geological field guide series (E-Book) .
Germany:
WIley Blackwell.
Gaya MLA
Kruhl, Jorn., H.
"Drawing Geological Structures the geological field guide series (E-Book)".
Germany:
WIley Blackwell,
2017.
E-book.