Citace podle APA (7th ed.)

Open University. Graphs, networks and design. Planarity and colouring. Open University Press.

Citace podle Chicago (17th ed.)

Open University. Graphs, Networks and Design. Planarity and Colouring. Milton Keynes: Open University Press.

Citace podle MLA (8th ed.)

Open University. Graphs, Networks and Design. Planarity and Colouring. Open University Press.

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