 The Basics (author-hosted chapter preview)

Online text: www.math.uni-hamburg.de/home/diestel/books/graph.theory/preview/Ch1.pdf

Cited passages: Section 1.7, printed page 20 and Figure 1.7.3: contracting an edge to one vertex; Section 1.7, printed pages 18–21: subdivisions and Proposition 1.7.3(i); Section 1.7, printed pages 19–20, Corollary 1.7.2: finite minors by deletions and contractions.

Cited passages: Diestel, Graph Theory, Section 1.1; Diestel, Graph Theory, Section 1.5.