Παραπομπή APA

BHATNAGAR, S. P. a. . M. (2018). GYMNOSPERMS. NEW AGE INTERNATINAL (P) LTD.

Παραπομπή Chicago Style

BHATNAGAR, S P and MOITRA. GYMNOSPERMS. NEW DELHI: NEW AGE INTERNATINAL (P) LTD, 2018.

Παραπομπή MLA

BHATNAGAR, S P and MOITRA. GYMNOSPERMS. NEW AGE INTERNATINAL (P) LTD, 2018.