APA (7th ed.) Citation

Erlander, S. (1980). Optimal Spatial Interaction and the Gravity Model. Springer Berlin Heidelberg.

Chicago Style (17th ed.) Citation

Erlander, Sven. Optimal Spatial Interaction and the Gravity Model. Berlin, Heidelberg: Springer Berlin Heidelberg, 1980.

MLA (9th ed.) Citation

Erlander, Sven. Optimal Spatial Interaction and the Gravity Model. Springer Berlin Heidelberg, 1980.

Warning: These citations may not always be 100% accurate.