APA (7th ed.) Citation

Smith, C. J. (1980). Social networks as metaphors, models and methods. Progress in Human Geography, 4(4), 500.

Chicago Style (17th ed.) Citation

Smith, Christopher J. "Social Networks as Metaphors, Models and Methods." Progress in Human Geography 4, no. 4 (1980): 500.

MLA (9th ed.) Citation

Smith, Christopher J. "Social Networks as Metaphors, Models and Methods." Progress in Human Geography, vol. 4, no. 4, 1980, p. 500.