APA استشهاد

Pipkin, B. W. (1997). Laboratory exercises in oceanography. columbia University.

استشهاد بنمط شيكاغو

Pipkin, Bernard W. Laboratory Exercises in Oceanography. American: columbia University, 1997.

MLA استشهاد

Pipkin, Bernard W. Laboratory Exercises in Oceanography. columbia University, 1997.