APA

Ellefson P. V., Bellinger M. D. & Lewis B. J. (1990). Nonindustrial Private Forestry. An Agenda for Economic and Policy Research. : .

Chicago

Ellefson Paul V, Bellinger Melvin D and Lewis Bernard J. 1990. Nonindustrial Private Forestry. An Agenda for Economic and Policy Research. : .

Harvard

Ellefson P. V., Bellinger M. D. and Lewis B. J. (1990). Nonindustrial Private Forestry. An Agenda for Economic and Policy Research. : .

MLA

Ellefson Paul V, Bellinger Melvin D and Lewis Bernard J. Nonindustrial Private Forestry. An Agenda for Economic and Policy Research. : . 1990.