APA

RICHARD M. HOLMAN/WILFRED W. ROBBINS, .A textbook of general botany for colleges and university. : .

Chicago

RICHARD M. HOLMAN/WILFRED W. ROBBINS, .A textbook of general botany for colleges and university. : .

Harvard

RICHARD M. HOLMAN/WILFRED W. ROBBINS, .A textbook of general botany for colleges and university. : .

MLA

RICHARD M. HOLMAN/WILFRED W. ROBBINS, .: . .