APA

geissler c. a., vaughan j. g., . (1999). the new oxford book of food plants. oxford: oxford university press.

Chicago

geissler c a, vaughan j g, . 1999. the new oxford book of food plants. oxford: oxford university press.

Harvard

geissler c. a., vaughan j. g., . (1999). the new oxford book of food plants. oxford: oxford university press.

MLA

geissler c a, vaughan j g, . the new oxford book of food plants. oxford: oxford university press. 1999.