APA-viite

Mettrick, H. (1993). Development oriented research in agriculture: An ICRA textbook. Wageningen, Netherlands: International Centre for Development Oriented Research in Agriculture.

Chicago-tyylinen lähdeviittaus

Mettrick, Hal. Development Oriented Research in Agriculture: An ICRA Textbook. Wageningen, Netherlands: International Centre for Development Oriented Research in Agriculture, 1993.

MLA-viite

Mettrick, Hal. Development Oriented Research in Agriculture: An ICRA Textbook. Wageningen, Netherlands: International Centre for Development Oriented Research in Agriculture, 1993.

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