APA

North Carolina Satate Univrsity, . (1971). Bulletin Agricultural Experiment Station & Research Serv. Raleigh, North Carolina: North Carolina Satate Univrsity.

Chicago

North Carolina Satate Univrsity, . 1971. Bulletin Agricultural Experiment Station & Research Serv. Raleigh, North Carolina: North Carolina Satate Univrsity.

Harvard

North Carolina Satate Univrsity, . (1971). Bulletin Agricultural Experiment Station & Research Serv. Raleigh, North Carolina: North Carolina Satate Univrsity.

MLA

North Carolina Satate Univrsity, . Bulletin Agricultural Experiment Station & Research Serv. Raleigh, North Carolina: North Carolina Satate Univrsity. 1971.