Dyfyniad APA

Hawksworth,David L, . K. P. M. e., & Clarke , S. D. (1997). Biodiversity information: Needs and Options. CABI.

Dyfyniad Arddull Chicago

Hawksworth,David L, Kirk Paul M ed, and Stella Dextre Clarke. Biodiversity Information: Needs and Options. uk: CABI, 1997.

Dyfyniad MLA

Hawksworth,David L, Kirk Paul M ed, and Stella Dextre Clarke. Biodiversity Information: Needs and Options. CABI, 1997.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.