Lua APA (7ú heag.)

RANJAN GOPAL,RAO A S R. (2014). BASIC AND APPLIED SOIL MECHANICS. NEW AGE INTERNATIONAL PUBLISHERS.

Lua i Stíl Chicago (17ú heag.)

RANJAN GOPAL,RAO A S R. BASIC AND APPLIED SOIL MECHANICS. NEW DELHI: NEW AGE INTERNATIONAL PUBLISHERS, 2014.

Lua MLA (9ú heag.)

RANJAN GOPAL,RAO A S R. BASIC AND APPLIED SOIL MECHANICS. NEW AGE INTERNATIONAL PUBLISHERS, 2014.

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