Gaya APA
Suseno, O, H. (1988).
Genetic variation and improvement of pinus merkusii jungh.et de vriese .
Yogyakarta:
Fakultas pertanian UGM.
Gaya MLA
Suseno, Oemi, Hani'in.
"Genetic variation and improvement of pinus merkusii jungh.et de vriese".
Yogyakarta:
Fakultas pertanian UGM,
1988.
Text.