Cita APA

Wiersema,John H, & Leon,Blanca. (1999). World economic plants: Standard reference. CRC Press Inc.

Chicago Edition Citation

Wiersema,John H, i Leon,Blanca. World Economic Plants: Standard Reference. Florida: CRC Press Inc, 1999.

Cita MLA

Wiersema,John H, i Leon,Blanca. World Economic Plants: Standard Reference. CRC Press Inc, 1999.

Atenció: Aquestes cites poden no estar 100% correctes.