Παραπομπή APA

Ravi P Gupta. (1991). remote sensing geology. Springer-Verlag.

Παραπομπή Chicago Style

Ravi P Gupta. Remote Sensing Geology. Springer-Verlag, 1991.

Παραπομπή MLA

Ravi P Gupta. Remote Sensing Geology. Springer-Verlag, 1991.