APA (7 वां संस्करण) प्रशस्ति पत्र

Cloke, P., Philo, C., & Sadler, D. (1991). Approaching human geography: An introduction to contemporary theoretical debates. Routledge.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Cloke, Paul, Chris Philo, और David Sadler. Approaching Human Geography: An Introduction to Contemporary Theoretical Debates. London: Routledge, 1991.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Cloke, Paul, et al. Approaching Human Geography: An Introduction to Contemporary Theoretical Debates. Routledge, 1991.