Sosna obyknovennai͡a.
APA Citation
Pravdin, L. Fedorovich. (1964). Sosna obyknovennai͡a. Moskva: #.
MLA Citation
Pravdin, Leonid Fedorovich. Sosna Obyknovennai͡a. Moskva: #, 1964.
Warning: These citations may not always be complete (especially for serials).