APA

Harris N., . (1992). Cities in the 1990s. the challenge for developing countries. London: University College London.

Chicago

Harris Nigel, . 1992. Cities in the 1990s. the challenge for developing countries. London: University College London.

Harvard

Harris N., . (1992). Cities in the 1990s. the challenge for developing countries. London: University College London.

MLA

Harris Nigel, . Cities in the 1990s. the challenge for developing countries. London: University College London. 1992.