APA

Symposis in Agricultural Research, . (1978). Biosystematics in Agriculture : Beltsville Symposia in Agricultural Research. Florida: Allanheld; John Wiley & Sons.

Chicago

Symposis in Agricultural Research, . 1978. Biosystematics in Agriculture : Beltsville Symposia in Agricultural Research. Florida: Allanheld; John Wiley & Sons.

Harvard

Symposis in Agricultural Research, . (1978). Biosystematics in Agriculture : Beltsville Symposia in Agricultural Research. Florida: Allanheld; John Wiley & Sons.

MLA

Symposis in Agricultural Research, . Biosystematics in Agriculture : Beltsville Symposia in Agricultural Research. Florida: Allanheld; John Wiley & Sons. 1978.