APA استشهاد

Thalmann,hans E. (1960). An index to the genera and species of the foraminifera. George vanderbilt foundation.

استشهاد بنمط شيكاغو

Thalmann,hans E. An Index to the Genera and Species of the Foraminifera. California: George vanderbilt foundation, 1960.

MLA استشهاد

Thalmann,hans E. An Index to the Genera and Species of the Foraminifera. George vanderbilt foundation, 1960.