Cita APA (7th ed.)

Singh, R. L., & Singh, P. B. R. 526.8 S617e: Elements of practical geography (Revised (edition statement to verify).). New Delhi.

Cita Chicago (17th ed.)

Singh, R. L., i P. B. Rana Singh. 526.8 S617e: Elements of Practical Geography. Revised (edition statement to verify). R. L. Singh; P. B. Rana Singh: New Delhi.

Cita MLA (9th ed.)

Singh, R. L., i P. B. Rana Singh. 526.8 S617e: Elements of Practical Geography. Revised (edition statement to verify). New Delhi.